diff --git a/src/libvlr/vlr_lu_fsm.c b/src/libvlr/vlr_lu_fsm.c
index 6c8b53a..0ac5b9a 100644
--- a/src/libvlr/vlr_lu_fsm.c
+++ b/src/libvlr/vlr_lu_fsm.c
@@ -72,11 +72,14 @@
 				 void *data)
 {
 	struct vlr_subscr *vsub = fi->priv;
+	int rc;
 
 	OSMO_ASSERT(event == UPD_HLR_VLR_E_START);
 
 	/* Send UpdateLocation to HLR */
-	vlr_subscr_req_lu(vsub, vsub->vlr->cfg.is_ps);
+	rc = vlr_subscr_req_lu(vsub, vsub->vlr->cfg.is_ps);
+	if (rc < 0)
+		LOGPFSML(fi, LOGL_ERROR, "Failed to send UpdateLocation to HLR\n");
 	osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_WAIT_FOR_DATA,
 				LU_TIMEOUT_LONG, 0);
 }