diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 8308225ef9fc923fe79b6e00fc21d7f2e7e26646..387c1e70051cfaf71d50c53e851a16c6ec663a3d 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -15685,7 +15685,7 @@ static void check_via(struct sip_pvt *p, struct sip_request *req)
 {
 	char via[512];
 	char *c, *maddr;
-	struct ast_sockaddr tmp;
+	struct ast_sockaddr tmp = { { 0, } };
 	uint16_t port;
 
 	ast_copy_string(via, sip_get_header(req, "Via"), sizeof(via));