diff --git a/doc/examples/filtering_video.c b/doc/examples/filtering_video.c
index b2191251b5..5a314b3127 100644
--- a/doc/examples/filtering_video.c
+++ b/doc/examples/filtering_video.c
@@ -29,6 +29,8 @@
 
 #define _XOPEN_SOURCE 600 /* for usleep */
 #include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>