diff --git a/src/png.c b/src/png.c
index 2b8c068..22b296a 100644
--- a/src/png.c
+++ b/src/png.c
@@ -1,5 +1,6 @@
 #include <libavformat/avformat.h>
 #include <libswscale/swscale.h>
+#include <libavcodec/avcodec.h>
 #include "png.h"
 
 enum AVPixelFormat pix_fmt(AVFrame *in_frame)