diff --git a/backends/audiocd/sdl/sdl-audiocd.cpp b/backends/audiocd/sdl/sdl-audiocd.cpp
index 62ab333f54d..362ed0fc47a 100644
--- a/backends/audiocd/sdl/sdl-audiocd.cpp
+++ b/backends/audiocd/sdl/sdl-audiocd.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(SDL_BACKEND)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/events/default/default-events.cpp b/backends/events/default/default-events.cpp
index c8d19a57a5f..9befeb00c9f 100644
--- a/backends/events/default/default-events.cpp
+++ b/backends/events/default/default-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if !defined(DISABLE_DEFAULT_EVENTMANAGER)
 
 #include "common/system.h"
diff --git a/backends/events/dinguxsdl/dinguxsdl-events.cpp b/backends/events/dinguxsdl/dinguxsdl-events.cpp
index 03e1663ca8b..427b14fdae6 100644
--- a/backends/events/dinguxsdl/dinguxsdl-events.cpp
+++ b/backends/events/dinguxsdl/dinguxsdl-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DINGUX)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/events/gp2xsdl/gp2xsdl-events.cpp b/backends/events/gp2xsdl/gp2xsdl-events.cpp
index 51ff3344419..b3818940c68 100644
--- a/backends/events/gp2xsdl/gp2xsdl-events.cpp
+++ b/backends/events/gp2xsdl/gp2xsdl-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(GP2X) || defined(GP2XWIZ)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/events/linuxmotosdl/linuxmotosdl-events.cpp b/backends/events/linuxmotosdl/linuxmotosdl-events.cpp
index 5e570f99dd0..aa9214d89f1 100644
--- a/backends/events/linuxmotosdl/linuxmotosdl-events.cpp
+++ b/backends/events/linuxmotosdl/linuxmotosdl-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(LINUXMOTO)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/events/samsungtvsdl/samsungtvsdl-events.cpp b/backends/events/samsungtvsdl/samsungtvsdl-events.cpp
index 1d8e5e4a28d..deb4e8cc67d 100644
--- a/backends/events/samsungtvsdl/samsungtvsdl-events.cpp
+++ b/backends/events/samsungtvsdl/samsungtvsdl-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef SAMSUNGTV
 
 #include "backends/events/samsungtvsdl/samsungtvsdl-events.h"
diff --git a/backends/events/sdl/sdl-events.cpp b/backends/events/sdl/sdl-events.cpp
index 379e77a48dc..83d726c92d5 100644
--- a/backends/events/sdl/sdl-events.cpp
+++ b/backends/events/sdl/sdl-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(SDL_BACKEND)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/events/symbiansdl/symbiansdl-events.cpp b/backends/events/symbiansdl/symbiansdl-events.cpp
index 751734f8ec9..8c995e7eb75 100644
--- a/backends/events/symbiansdl/symbiansdl-events.cpp
+++ b/backends/events/symbiansdl/symbiansdl-events.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef __SYMBIAN32__
 
 #include "backends/events/symbiansdl/symbiansdl-events.h"
diff --git a/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp b/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp
index fe8c742ed9b..fb164638b97 100644
--- a/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp
+++ b/backends/graphics/dinguxsdl/dinguxsdl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DINGUX)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/graphics/gp2xsdl/gp2xsdl-graphics.cpp b/backends/graphics/gp2xsdl/gp2xsdl-graphics.cpp
index 2b029a39e55..e785935e4d4 100644
--- a/backends/graphics/gp2xsdl/gp2xsdl-graphics.cpp
+++ b/backends/graphics/gp2xsdl/gp2xsdl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef GP2X
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/graphics/linuxmotosdl/linuxmotosdl-graphics.cpp b/backends/graphics/linuxmotosdl/linuxmotosdl-graphics.cpp
index bf3330db4c5..c2dcb7f587b 100644
--- a/backends/graphics/linuxmotosdl/linuxmotosdl-graphics.cpp
+++ b/backends/graphics/linuxmotosdl/linuxmotosdl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(LINUXMOTO)
 
 #include "backends/graphics/linuxmotosdl/linuxmotosdl-graphics.h"
diff --git a/backends/graphics/opengl/glerrorcheck.cpp b/backends/graphics/opengl/glerrorcheck.cpp
index c3b0c9cd633..13da4ba60ff 100644
--- a/backends/graphics/opengl/glerrorcheck.cpp
+++ b/backends/graphics/opengl/glerrorcheck.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DEBUG) && defined(USE_OPENGL)
 
 #include "backends/graphics/opengl/glerrorcheck.h"
diff --git a/backends/graphics/opengl/gltexture.cpp b/backends/graphics/opengl/gltexture.cpp
index 650f12b92c8..a76fc3d9e62 100644
--- a/backends/graphics/opengl/gltexture.cpp
+++ b/backends/graphics/opengl/gltexture.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(USE_OPENGL)
 
 #include "backends/graphics/opengl/gltexture.h"
diff --git a/backends/graphics/opengl/opengl-graphics.cpp b/backends/graphics/opengl/opengl-graphics.cpp
index f826da48fe1..35dd9a60463 100644
--- a/backends/graphics/opengl/opengl-graphics.cpp
+++ b/backends/graphics/opengl/opengl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(USE_OPENGL)
 
 #include "backends/graphics/opengl/opengl-graphics.h"
diff --git a/backends/graphics/openglsdl/openglsdl-graphics.cpp b/backends/graphics/openglsdl/openglsdl-graphics.cpp
index 01ea0d465df..f3aba1fcf4e 100644
--- a/backends/graphics/openglsdl/openglsdl-graphics.cpp
+++ b/backends/graphics/openglsdl/openglsdl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(SDL_BACKEND) && defined(USE_OPENGL)
 
 #include "backends/graphics/openglsdl/openglsdl-graphics.h"
diff --git a/backends/graphics/sdl/sdl-graphics.cpp b/backends/graphics/sdl/sdl-graphics.cpp
index 226285c593f..7746cc54a72 100644
--- a/backends/graphics/sdl/sdl-graphics.cpp
+++ b/backends/graphics/sdl/sdl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(SDL_BACKEND)
 
 #include "backends/graphics/sdl/sdl-graphics.h"
diff --git a/backends/graphics/symbiansdl/symbiansdl-graphics.cpp b/backends/graphics/symbiansdl/symbiansdl-graphics.cpp
index b930b5a9d18..d0c8728ce90 100644
--- a/backends/graphics/symbiansdl/symbiansdl-graphics.cpp
+++ b/backends/graphics/symbiansdl/symbiansdl-graphics.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef __SYMBIAN32__
 
 #include "backends/graphics/symbiansdl/symbiansdl-graphics.h"
diff --git a/backends/midi/coreaudio.cpp b/backends/midi/coreaudio.cpp
index 97db5cb2920..62e9a6d0f43 100644
--- a/backends/midi/coreaudio.cpp
+++ b/backends/midi/coreaudio.cpp
@@ -22,11 +22,13 @@
  * $Id$
  */
 
-#ifdef MACOSX
-
 // Disable symbol overrides so that we can use system headers.
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
 
+#include "common/scummsys.h"
+
+#ifdef MACOSX
+
 // HACK to disable deprecated warnings under Mac OS X 10.5.
 // Apple depracted the AUGraphNewNode & AUGraphGetNodeInfo APIs
 // in favor of the new AUGraphAddNode & AUGraphNodeInfo APIs.
diff --git a/backends/midi/coremidi.cpp b/backends/midi/coremidi.cpp
index bca16df61ad..2df9f783831 100644
--- a/backends/midi/coremidi.cpp
+++ b/backends/midi/coremidi.cpp
@@ -22,11 +22,13 @@
  * $Id$
  */
 
-#ifdef MACOSX
-
 // Disable symbol overrides so that we can use system headers.
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
 
+#include "common/scummsys.h"
+
+#ifdef MACOSX
+
 #include "common/config-manager.h"
 #include "common/util.h"
 #include "sound/musicplugin.h"
diff --git a/backends/midi/dmedia.cpp b/backends/midi/dmedia.cpp
index 5e4088fa178..95a199f8bcf 100644
--- a/backends/midi/dmedia.cpp
+++ b/backends/midi/dmedia.cpp
@@ -27,11 +27,13 @@
  *    some code liberated from seq.cpp and coremidi.cpp
  */
 
-#if defined(IRIX)
-
 // Disable symbol overrides so that we can use system headers.
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
 
+#include "common/scummsys.h"
+
+#if defined(IRIX)
+
 #include "common/scummsys.h"
 #include "common/util.h"
 #include "common/config-manager.h"
diff --git a/backends/midi/stmidi.cpp b/backends/midi/stmidi.cpp
index 01e28aa5ca4..6e4d69f2555 100644
--- a/backends/midi/stmidi.cpp
+++ b/backends/midi/stmidi.cpp
@@ -34,11 +34,13 @@
  * cycles.  I might change so sysex messages are sent the other way later.
  */
 
-#if defined __MINT__
-
 // Disable symbol overrides so that we can use system headers.
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
 
+#include "common/scummsys.h"
+
+#if defined __MINT__
+
 #include <osbind.h>
 #include "sound/mpu401.h"
 #include "common/util.h"
diff --git a/backends/midi/windows.cpp b/backends/midi/windows.cpp
index 81b29219b4d..40d9bd8ebdb 100644
--- a/backends/midi/windows.cpp
+++ b/backends/midi/windows.cpp
@@ -22,6 +22,8 @@
  * $Id$
  */
 
+#include "common/scummsys.h"
+
 #if defined(WIN32) && !defined(_WIN32_WCE)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/mutex/sdl/sdl-mutex.cpp b/backends/mutex/sdl/sdl-mutex.cpp
index 3c572a94d50..90fd4c1497a 100644
--- a/backends/mutex/sdl/sdl-mutex.cpp
+++ b/backends/mutex/sdl/sdl-mutex.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(SDL_BACKEND)
 
 #include "backends/mutex/sdl/sdl-mutex.h"
diff --git a/backends/platform/sdl/amigaos/amigaos-main.cpp b/backends/platform/sdl/amigaos/amigaos-main.cpp
index db4598e8791..beb27fd714c 100644
--- a/backends/platform/sdl/amigaos/amigaos-main.cpp
+++ b/backends/platform/sdl/amigaos/amigaos-main.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(__amigaos4__)
 
 #include "backends/platform/sdl/amigaos/amigaos.h"
diff --git a/backends/platform/sdl/amigaos/amigaos.cpp b/backends/platform/sdl/amigaos/amigaos.cpp
index d2924445a34..77c2c2e21d1 100644
--- a/backends/platform/sdl/amigaos/amigaos.cpp
+++ b/backends/platform/sdl/amigaos/amigaos.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef __amigaos4__
 
 #include "backends/platform/sdl/amigaos/amigaos.h"
diff --git a/backends/platform/sdl/macosx/macosx-main.cpp b/backends/platform/sdl/macosx/macosx-main.cpp
index 023860b19f0..94655f8118f 100644
--- a/backends/platform/sdl/macosx/macosx-main.cpp
+++ b/backends/platform/sdl/macosx/macosx-main.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef MACOSX
 
 #include "backends/platform/sdl/macosx/macosx.h"
diff --git a/backends/platform/sdl/macosx/macosx.cpp b/backends/platform/sdl/macosx/macosx.cpp
index 814badbca4b..5ea65b6449c 100644
--- a/backends/platform/sdl/macosx/macosx.cpp
+++ b/backends/platform/sdl/macosx/macosx.cpp
@@ -23,11 +23,13 @@
  *
  */
 
-#ifdef MACOSX
-
 // Disable symbol overrides so that we can use system headers.
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
 
+#include "common/scummsys.h"
+
+#ifdef MACOSX
+
 #include "backends/platform/sdl/macosx/macosx.h"
 #include "backends/mixer/doublebuffersdl/doublebuffersdl-mixer.h"
 
diff --git a/backends/platform/sdl/posix/posix-main.cpp b/backends/platform/sdl/posix/posix-main.cpp
index de9eb2b7ef0..10ed43f43f6 100644
--- a/backends/platform/sdl/posix/posix-main.cpp
+++ b/backends/platform/sdl/posix/posix-main.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(UNIX) && !defined(MACOSX) && !defined(SAMSUNGTV) && !defined(LINUXMOTO) && !defined(GP2XWIZ) && !defined(GP2X) && !defined(DINGUX)
 
 #include "backends/platform/sdl/posix/posix.h"
diff --git a/backends/platform/sdl/posix/posix.cpp b/backends/platform/sdl/posix/posix.cpp
index c9c7304c0f9..6f911881842 100644
--- a/backends/platform/sdl/posix/posix.cpp
+++ b/backends/platform/sdl/posix/posix.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef UNIX
 
 #include "backends/platform/sdl/posix/posix.h"
diff --git a/backends/platform/sdl/sdl.cpp b/backends/platform/sdl/sdl.cpp
index 5d41c304ef8..561e5b2aecc 100644
--- a/backends/platform/sdl/sdl.cpp
+++ b/backends/platform/sdl/sdl.cpp
@@ -24,7 +24,7 @@
  */
 
 // Disable symbol overrides so that we can use system headers.
-#define FORBIDDEN_SYMBOL_ALLOW_ALL
+#define FORBIDDEN_SYMBOL_EXCEPTION_FILE
 
 #ifdef WIN32
 #define WIN32_LEAN_AND_MEAN
diff --git a/backends/platform/sdl/win32/win32-main.cpp b/backends/platform/sdl/win32/win32-main.cpp
index 25f208ddac9..f2b570043fd 100644
--- a/backends/platform/sdl/win32/win32-main.cpp
+++ b/backends/platform/sdl/win32/win32-main.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef WIN32
 
 // Fix for bug #2895217 "MSVC compilation broken with r47595":
diff --git a/backends/platform/sdl/win32/win32.cpp b/backends/platform/sdl/win32/win32.cpp
index dce7b88c137..9723d1f68e4 100644
--- a/backends/platform/sdl/win32/win32.cpp
+++ b/backends/platform/sdl/win32/win32.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef WIN32
 
 #define WIN32_LEAN_AND_MEAN
diff --git a/backends/plugins/dc/dc-provider.cpp b/backends/plugins/dc/dc-provider.cpp
index 9fce62dbe34..67877dc9f4d 100644
--- a/backends/plugins/dc/dc-provider.cpp
+++ b/backends/plugins/dc/dc-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(__DC__)
 
 #include "backends/plugins/dc/dc-provider.h"
diff --git a/backends/plugins/ds/ds-provider.cpp b/backends/plugins/ds/ds-provider.cpp
index 832fd1312cd..d0697371e97 100644
--- a/backends/plugins/ds/ds-provider.cpp
+++ b/backends/plugins/ds/ds-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(__DS__)
 
 #include <malloc.h>
diff --git a/backends/plugins/posix/posix-provider.cpp b/backends/plugins/posix/posix-provider.cpp
index 7dd25ddd67e..01e48739bd0 100644
--- a/backends/plugins/posix/posix-provider.cpp
+++ b/backends/plugins/posix/posix-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(UNIX)
 
 #include "backends/plugins/posix/posix-provider.h"
diff --git a/backends/plugins/ps2/ps2-provider.cpp b/backends/plugins/ps2/ps2-provider.cpp
index 37bdff0525a..0836ed18b4d 100644
--- a/backends/plugins/ps2/ps2-provider.cpp
+++ b/backends/plugins/ps2/ps2-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(__PLAYSTATION2__)
 
 #include "backends/plugins/ps2/ps2-provider.h"
diff --git a/backends/plugins/psp/psp-provider.cpp b/backends/plugins/psp/psp-provider.cpp
index 87e44280245..5fa083c88cd 100644
--- a/backends/plugins/psp/psp-provider.cpp
+++ b/backends/plugins/psp/psp-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(__PSP__)
 
 #include <psputils.h>
diff --git a/backends/plugins/sdl/sdl-provider.cpp b/backends/plugins/sdl/sdl-provider.cpp
index 46e00de453e..51c19fcef35 100644
--- a/backends/plugins/sdl/sdl-provider.cpp
+++ b/backends/plugins/sdl/sdl-provider.cpp
@@ -23,10 +23,9 @@
  *
  */
 
-#if defined(DYNAMIC_MODULES) && defined(SDL_BACKEND)
+#include "common/scummsys.h"
 
-// Disable symbol overrides so that we can use system headers.
-#define FORBIDDEN_SYMBOL_ALLOW_ALL
+#if defined(DYNAMIC_MODULES) && defined(SDL_BACKEND)
 
 #include "backends/plugins/sdl/sdl-provider.h"
 #include "backends/plugins/dynamic-plugin.h"
diff --git a/backends/plugins/wii/wii-provider.cpp b/backends/plugins/wii/wii-provider.cpp
index b05bc59432a..639616ac159 100644
--- a/backends/plugins/wii/wii-provider.cpp
+++ b/backends/plugins/wii/wii-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(__WII__)
 
 #include <malloc.h>
diff --git a/backends/plugins/win32/win32-provider.cpp b/backends/plugins/win32/win32-provider.cpp
index 65586249e82..16532d40597 100644
--- a/backends/plugins/win32/win32-provider.cpp
+++ b/backends/plugins/win32/win32-provider.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(DYNAMIC_MODULES) && defined(_WIN32)
 
 #include "backends/plugins/win32/win32-provider.h"
diff --git a/backends/saves/default/default-saves.cpp b/backends/saves/default/default-saves.cpp
index c88f36f5ccb..0e16f165b38 100644
--- a/backends/saves/default/default-saves.cpp
+++ b/backends/saves/default/default-saves.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)
 
 #include "backends/saves/default/default-saves.h"
diff --git a/backends/saves/posix/posix-saves.cpp b/backends/saves/posix/posix-saves.cpp
index 5b13513bcbb..866cd912e54 100644
--- a/backends/saves/posix/posix-saves.cpp
+++ b/backends/saves/posix/posix-saves.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(UNIX) && !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)
 
 #include "backends/saves/posix/posix-saves.h"
diff --git a/backends/saves/psp/psp-saves.cpp b/backends/saves/psp/psp-saves.cpp
index 475c8fa6c5f..66c63dfdeaf 100644
--- a/backends/saves/psp/psp-saves.cpp
+++ b/backends/saves/psp/psp-saves.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef __PSP__
 
 #include "backends/saves/psp/psp-saves.h"
diff --git a/backends/timer/psp/timer.cpp b/backends/timer/psp/timer.cpp
index 2b6bebe37c2..27e8ef0aeb0 100644
--- a/backends/timer/psp/timer.cpp
+++ b/backends/timer/psp/timer.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined (__PSP__)
 #include <pspthreadman.h>
 
diff --git a/backends/timer/sdl/sdl-timer.cpp b/backends/timer/sdl/sdl-timer.cpp
index 83b2cff3ebd..e810d3e6469 100644
--- a/backends/timer/sdl/sdl-timer.cpp
+++ b/backends/timer/sdl/sdl-timer.cpp
@@ -24,6 +24,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #if defined(SDL_BACKEND)
 
 // Disable symbol overrides so that we can use system headers.
diff --git a/backends/vkeybd/image-map.cpp b/backends/vkeybd/image-map.cpp
index 36d060e1d42..b0a77b52207 100644
--- a/backends/vkeybd/image-map.cpp
+++ b/backends/vkeybd/image-map.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef ENABLE_VKEYBD
 
 #include "backends/vkeybd/image-map.h"
diff --git a/backends/vkeybd/polygon.cpp b/backends/vkeybd/polygon.cpp
index 66e53d9df0e..8becbed5859 100644
--- a/backends/vkeybd/polygon.cpp
+++ b/backends/vkeybd/polygon.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef ENABLE_VKEYBD
 
 #include "backends/vkeybd/polygon.h"
diff --git a/backends/vkeybd/virtual-keyboard-gui.cpp b/backends/vkeybd/virtual-keyboard-gui.cpp
index 8bfadfd88cf..c5ab39e46b6 100644
--- a/backends/vkeybd/virtual-keyboard-gui.cpp
+++ b/backends/vkeybd/virtual-keyboard-gui.cpp
@@ -23,6 +23,8 @@
 *
 */
 
+#include "common/scummsys.h"
+
 #ifdef ENABLE_VKEYBD
 
 #include "backends/vkeybd/virtual-keyboard-gui.h"
diff --git a/backends/vkeybd/virtual-keyboard-parser.cpp b/backends/vkeybd/virtual-keyboard-parser.cpp
index 5efdc0a6535..a81258b25fe 100644
--- a/backends/vkeybd/virtual-keyboard-parser.cpp
+++ b/backends/vkeybd/virtual-keyboard-parser.cpp
@@ -23,6 +23,7 @@
  *
  */
 
+#include "common/scummsys.h"
 
 #ifdef ENABLE_VKEYBD
 
diff --git a/backends/vkeybd/virtual-keyboard.cpp b/backends/vkeybd/virtual-keyboard.cpp
index 2c88322191c..31fde8c0fae 100644
--- a/backends/vkeybd/virtual-keyboard.cpp
+++ b/backends/vkeybd/virtual-keyboard.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/scummsys.h"
+
 #ifdef ENABLE_VKEYBD
 
 #include "backends/vkeybd/virtual-keyboard.h"