diff --git a/libavcodec/rectangle.h b/libavcodec/rectangle.h
index 563c988030..bc994f8de1 100644
--- a/libavcodec/rectangle.h
+++ b/libavcodec/rectangle.h
@@ -28,7 +28,10 @@
 #ifndef AVCODEC_RECTANGLE_H
 #define AVCODEC_RECTANGLE_H
 
+#include <assert.h>
+#include "config.h"
 #include "libavutil/common.h"
+#include "dsputil.h"
 
 /**
  * fill a rectangle.