diff --git a/src/video/x11/SDL_x11gamma.c b/src/video/x11/SDL_x11gamma.c
new file mode 100644
index 000000000..b1825422a
--- /dev/null
+++ b/src/video/x11/SDL_x11gamma.c
@@ -0,0 +1,37 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+#include "../SDL_sysvideo.h"
+#include "SDL_x11video.h"
+
+
+int
+X11_SetDisplayGammaRamp(_THIS, Uint16 * ramp)
+{
+    return (-1);
+}
+
+int
+X11_GetDisplayGammaRamp(_THIS, Uint16 * ramp)
+{
+    return -1;
+}
diff --git a/src/video/x11/SDL_x11gamma.h b/src/video/x11/SDL_x11gamma.h
new file mode 100644
index 000000000..5630fa37f
--- /dev/null
+++ b/src/video/x11/SDL_x11gamma.h
@@ -0,0 +1,30 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#ifndef _SDL_x11gamma_h
+#define _SDL_x11gamma_h
+
+extern int X11_SetDisplayGammaRamp(_THIS, Uint16 * ramp);
+extern int X11_GetDisplayGammaRamp(_THIS, Uint16 * ramp);
+
+#endif
diff --git a/src/video/x11/SDL_x11video.c b/src/video/x11/SDL_x11video.c
index 9d85cc079..8d7e13f80 100644
--- a/src/video/x11/SDL_x11video.c
+++ b/src/video/x11/SDL_x11video.c
@@ -168,8 +168,8 @@ X11_CreateDevice(int devindex)
     device->VideoQuit = X11_VideoQuit;
     device->GetDisplayModes = X11_GetDisplayModes;
     device->SetDisplayMode = X11_SetDisplayMode;
-//    device->SetDisplayGammaRamp = X11_SetDisplayGammaRamp;
-//    device->GetDisplayGammaRamp = X11_GetDisplayGammaRamp;
+    device->SetDisplayGammaRamp = X11_SetDisplayGammaRamp;
+    device->GetDisplayGammaRamp = X11_GetDisplayGammaRamp;
     device->PumpEvents = X11_PumpEvents;
 
     device->CreateWindow = X11_CreateWindow;