diff --git a/libavfilter/libmpcodecs/vf_qp.c b/libavfilter/libmpcodecs/vf_qp.c
index e8740d0a30..579ec1c98f 100644
--- a/libavfilter/libmpcodecs/vf_qp.c
+++ b/libavfilter/libmpcodecs/vf_qp.c
@@ -33,6 +33,7 @@
 
 #include "libavcodec/avcodec.h"
 #include "libavutil/eval.h"
+#include "libavutil/mem.h"
 
 
 struct vf_priv_s {