diff --git a/main/file.c b/main/file.c
index d5298bb03..1e9f250e6 100644
--- a/main/file.c
+++ b/main/file.c
@@ -1055,6 +1055,7 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 				switch(fr->subclass) {
 				case AST_CONTROL_HANGUP:
 				case AST_CONTROL_BUSY:
+				case AST_CONTROL_CONGESTION:
 					ast_frfree(fr);
 					return -1;
 				case AST_CONTROL_RINGING: