diff --git a/libavformat/os_support.c b/libavformat/os_support.c
index 6bdfc0409784a6b883719f015b8dd207520a493f..099d7b501f4393e7ca63259ed15f2fe998396d9a 100644
--- a/libavformat/os_support.c
+++ b/libavformat/os_support.c
@@ -60,11 +60,6 @@ static int inet_aton(const char *str, struct in_addr *add)
 
     return 1;
 }
-#else
-static int inet_aton(const char *str, struct in_addr *add)
-{
-    return inet_aton(str, add);
-}
 #endif /* !HAVE_INET_ATON */
 
 #if !HAVE_GETADDRINFO