diff --git a/include/uapi/drm/sis_drm.h b/include/uapi/drm/sis_drm.h
index 374858cdcdaa..a20d88bc4970 100644
--- a/include/uapi/drm/sis_drm.h
+++ b/include/uapi/drm/sis_drm.h
@@ -27,6 +27,8 @@
 #ifndef __SIS_DRM_H__
 #define __SIS_DRM_H__
 
+#include "drm.h"
+
 /* SiS specific ioctls */
 #define NOT_USED_0_3
 #define DRM_SIS_FB_ALLOC	0x04