diff --git a/libavformat/aiff.c b/libavformat/aiff.c
index d946f5b708..8fb7925be6 100644
--- a/libavformat/aiff.c
+++ b/libavformat/aiff.c
@@ -313,7 +313,7 @@ static int aiff_read_header(AVFormatContext *s,
     uint32_t tag;
     unsigned version = AIFF_C_VERSION1;
     ByteIOContext *pb = s->pb;
-    AVStream * st = s->streams[0];
+    AVStream * st;
 
     /* check FORM header */
     filesize = get_tag(pb, &tag);