diff --git a/doc/examples/demuxing_decoding.c b/doc/examples/demuxing_decoding.c
index ef1fd2bd53..8520d5b660 100644
--- a/doc/examples/demuxing_decoding.c
+++ b/doc/examples/demuxing_decoding.c
@@ -32,6 +32,7 @@
 #include <libavutil/imgutils.h>
 #include <libavutil/samplefmt.h>
 #include <libavutil/timestamp.h>
+#include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 
 static AVFormatContext *fmt_ctx = NULL;