From 606a5a24ea9e5529b0a42885482e23a3fc938f95 Mon Sep 17 00:00:00 2001
From: huangying11 <huangying11@baidu.com>
Date: Tue, 22 Feb 2022 10:39:28 +0800
Subject: [PATCH] =?UTF-8?q?chore:=20=E4=BF=AE=E6=94=B9inputRange=20schema?=
 =?UTF-8?q?=20=E7=B1=BB=E5=9E=8B=E5=AE=9A=E4=B9=89?=
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---
 src/renderers/Form/InputRange.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/renderers/Form/InputRange.tsx b/src/renderers/Form/InputRange.tsx
index b5d2ff4a2..4e1f07226 100644
--- a/src/renderers/Form/InputRange.tsx
+++ b/src/renderers/Form/InputRange.tsx
@@ -618,7 +618,7 @@ export default class RangeControl extends React.PureComponent<
     let renderMarks:
       | MarksType
       | {[index: number | string]: ReactNode}
-      | undefined = {...marks};
+      | undefined = marks ? {...marks} : marks;
     marks &&
       forEach(marks, (item, key) => {
         if (isObject(item) && (item as SchemaObject).type) {