diff --git a/channels/chan_dahdi.c b/channels/chan_dahdi.c
index 9d21792188..7b6e3d949b 100644
--- a/channels/chan_dahdi.c
+++ b/channels/chan_dahdi.c
@@ -6557,7 +6557,7 @@ static void *ss_thread(void *data)
 	int counter;
 	int samples = 0;
 	struct ast_smdi_md_message *smdi_msg = NULL;
-	int flags;
+	int flags = 0;
 	int i;
 	int timeout;
 	int getforward = 0;