diff --git a/libavformat/http.c b/libavformat/http.c
index 33585b0e6d..3dffaee43b 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -229,6 +229,7 @@ redo:
         memset(&s->auth_state, 0, sizeof(s->auth_state));
         attempts         = 0;
         location_changed = 0;
+        lower_proto      = "tcp";
         goto redo;
     }
     return 0;