diff --git a/src/modules/topos/tps_storage.c b/src/modules/topos/tps_storage.c
index da141888c3f..66169f7b026 100644
--- a/src/modules/topos/tps_storage.c
+++ b/src/modules/topos/tps_storage.c
@@ -371,7 +371,7 @@ int tps_storage_link_msg(sip_msg_t *msg, tps_data_t *td, int dir)
  */
 int tps_storage_record(sip_msg_t *msg, tps_data_t *td, int dialog)
 {
-	int ret;
+	int ret = -1; /* error if dialog == 0 */
 	str suid;
 
 	if(dialog==0) {