diff --git a/libavutil/internal.h b/libavutil/internal.h
index 08ee6e5ba2..61bc027630 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -47,7 +47,7 @@
 #endif
 
 #ifndef emms_c
-#   define emms_c()
+#   define emms_c() while(0)
 #endif
 
 #ifndef attribute_align_arg