diff --git a/include/drm/drm.h b/include/drm/drm.h
index 8e1ffb86..225ab6ce 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -696,7 +696,7 @@ struct drm_gem_open {
 #define DRM_IOCTL_MODE_GETFB		DRM_IOWR(0xAD, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_ADDFB		DRM_IOWR(0xAE, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_RMFB		DRM_IOWR(0xAF, unsigned int)
-#define DRM_IOCTL_MODE_DIRTYFB		DRM_IOWR(0xB0, struct drm_mode_fb_dirty_cmd)
+#define DRM_IOCTL_MODE_DIRTYFB		DRM_IOWR(0xB1, struct drm_mode_fb_dirty_cmd)
 
 /**
  * Device specific ioctls should only be in their respective headers