diff --git a/format/format.go b/format/format.go
index 56bdd053b..4ffb04d1e 100644
--- a/format/format.go
+++ b/format/format.go
@@ -302,7 +302,7 @@ func formatType(v reflect.Value) string {
 	case reflect.Map:
 		return fmt.Sprintf("%s | len:%d", v.Type(), v.Len())
 	default:
-		return fmt.Sprintf("%s", v.Type())
+		return v.Type().String()
 	}
 }