diff --git a/libavformat/avienc.c b/libavformat/avienc.c
index 15f07943f6..878fce4e20 100644
--- a/libavformat/avienc.c
+++ b/libavformat/avienc.c
@@ -57,7 +57,7 @@ typedef struct {
 
 typedef struct  {
     int64_t frames_hdr_strm;
-    int audio_strm_length;
+    int64_t audio_strm_length;
     int packet_count;
     int entry;