diff --git a/libavformat/avio.c b/libavformat/avio.c
index af9e049142..3fb64d149c 100644
--- a/libavformat/avio.c
+++ b/libavformat/avio.c
@@ -201,7 +201,7 @@ int64_t url_seek(URLContext *h, int64_t pos, int whence)
     int64_t ret;
 
     if (!h->prot->url_seek)
-        return AVERROR(EPIPE);
+        return AVERROR(ENOSYS);
     ret = h->prot->url_seek(h, pos, whence & ~AVSEEK_FORCE);
     return ret;
 }