diff --git a/src/packages/components/Charts/Pies/PieCommon/config.ts b/src/packages/components/Charts/Pies/PieCommon/config.ts
index b030fb38..c3edac24 100644
--- a/src/packages/components/Charts/Pies/PieCommon/config.ts
+++ b/src/packages/components/Charts/Pies/PieCommon/config.ts
@@ -15,7 +15,7 @@ export default class Config extends publicConfig implements CreateComponentType
     },
     legend: {
       top: '5%',
-      left: 'center',
+      left: 'center'
     },
     series: [
       {
diff --git a/src/packages/public/chart.ts b/src/packages/public/chart.ts
index cd71013a..43f3eb43 100644
--- a/src/packages/public/chart.ts
+++ b/src/packages/public/chart.ts
@@ -22,5 +22,5 @@ export const mergeTheme = <T, U, E extends keyof U> (
   themeSetting: U,
   includes: E[] = []
 ) => {
-  return merge(pick(themeSetting, includes), option)
+  return merge({}, pick(themeSetting, includes), option)
 }