diff --git a/drivers/usbhid-ups.c b/drivers/usbhid-ups.c
index 0577b9c..ec0d9e2 100644
--- a/drivers/usbhid-ups.c
+++ b/drivers/usbhid-ups.c
@@ -943,8 +943,10 @@ void upsdrv_updateinfo(void)
 
 		alarm_init();
 
-		if (hid_ups_walk(HU_WALKMODE_FULL_UPDATE) == FALSE)
+		if (hid_ups_walk(HU_WALKMODE_FULL_UPDATE) == FALSE) {
+			upsdebugx(1, "Boom...");
 			return;
+		}
 
 		lastpoll = now;
 		data_has_changed = FALSE;