diff --git a/charger/abl.go b/charger/abl.go
index ffcd85e5e..a1401ab7e 100644
--- a/charger/abl.go
+++ b/charger/abl.go
@@ -102,7 +102,7 @@ func (wb *ABLeMH) Status() (api.ChargeStatus, error) {
 	case 'A', 'B', 'C':
 		return api.ChargeStatus(r), nil
 	default:
-		return api.StatusNone, fmt.Errorf("invalid status: %v", r)
+		return api.StatusNone, fmt.Errorf("invalid status: %s", string(r))
 	}
 }