diff --git a/audio/out/ao_lavc.c b/audio/out/ao_lavc.c
index 163fdcae4f..4bae4389e8 100644
--- a/audio/out/ao_lavc.c
+++ b/audio/out/ao_lavc.c
@@ -26,6 +26,7 @@
 #include <limits.h>
 
 #include <libavutil/common.h>
+#include <libavutil/samplefmt.h>
 
 #include "config.h"
 #include "options/options.h"