diff --git a/dlls/msacm/msacm32_main.c b/dlls/msacm/msacm32_main.c
index dde962a..643d94b 100644
--- a/dlls/msacm/msacm32_main.c
+++ b/dlls/msacm/msacm32_main.c
@@ -28,6 +28,7 @@
 #include "winerror.h"
 #include "wine/debug.h"
 #include "mmsystem.h"
+#define NOBITMAP
 #include "mmreg.h"
 #include "msacm.h"
 #include "msacmdrv.h"