diff --git a/src/modules/ims_qos/rx_aar.c b/src/modules/ims_qos/rx_aar.c
index 9ebca2ecf1e..da4a0e42dd7 100644
--- a/src/modules/ims_qos/rx_aar.c
+++ b/src/modules/ims_qos/rx_aar.c
@@ -181,6 +181,8 @@ void async_aar_callback(int is_timeout, void *param, AAAMessage *aaa, long elaps
             STR_SHM_DUP(*passed_rx_session_id, aaa->sessionId->data, "cb_passed_rx_session_id");
             LM_DBG("passed rx session id [%.*s]", passed_rx_session_id->len, passed_rx_session_id->s);
             dlgb.register_dlgcb_nodlg( data->dlg, DLGCB_TERMINATED | DLGCB_DESTROY | DLGCB_EXPIRED | DLGCB_RESPONSE_WITHIN | DLGCB_CONFIRMED | DLGCB_FAILED, callback_dialog, (void*) (passed_rx_session_id), free_dialog_data);
+        } else {
+            unref_dlg(data->dlg, 1);
         }
         result = CSCF_RETURN_TRUE;
     } else {