diff --git a/res/res_pjsip_registrar.c b/res/res_pjsip_registrar.c
index 5963066191..2478e4b3c3 100644
--- a/res/res_pjsip_registrar.c
+++ b/res/res_pjsip_registrar.c
@@ -1017,7 +1017,7 @@ static struct ast_sip_aor *find_registrar_aor(struct pjsip_rx_data *rdata, struc
 {
 	struct ast_sip_aor *aor = NULL;
 	char *aor_name = NULL;
-	char *domain_name;
+	char *domain_name = NULL;
 	char *username = NULL;
 	int i;