diff --git a/libavformat/avio.c b/libavformat/avio.c
index 5d48ac04cc..6ea0e9eced 100644
--- a/libavformat/avio.c
+++ b/libavformat/avio.c
@@ -95,7 +95,7 @@ int register_protocol(URLProtocol *protocol)
 #endif
 
 static int url_alloc_for_protocol (URLContext **puc, struct URLProtocol *up,
-                       const char *filename, int flags)
+                                   const char *filename, int flags)
 {
     URLContext *uc;
     int err;