diff --git a/engines/ultima/nuvie/sound/adplug/opl.h b/engines/ultima/nuvie/sound/adplug/opl.h
index 8e12ad19af2..54220e7972e 100644
--- a/engines/ultima/nuvie/sound/adplug/opl.h
+++ b/engines/ultima/nuvie/sound/adplug/opl.h
@@ -23,6 +23,8 @@
 #ifndef NUVIE_SOUND_ADPLUG_OPL
 #define NUVIE_SOUND_ADPLUG_OPL
 
+#include "common/scummsys.h"
+
 namespace Ultima {
 namespace Nuvie {