diff --git a/libavformat/spdifenc.c b/libavformat/spdifenc.c
index 90ac8adc9f..b4111f62b7 100644
--- a/libavformat/spdifenc.c
+++ b/libavformat/spdifenc.c
@@ -45,6 +45,7 @@
  */
 
 #include "avformat.h"
+#include "avio_internal.h"
 #include "spdif.h"
 #include "libavcodec/ac3.h"
 #include "libavcodec/dca.h"