diff --git a/components/select/demo/search-box.md b/components/select/demo/search-box.md
index 3f74688c71..dba8878bad 100644
--- a/components/select/demo/search-box.md
+++ b/components/select/demo/search-box.md
@@ -70,7 +70,6 @@ class SearchInput extends React.Component {
         mode="combobox"
         value={this.state.value}
         placeholder={this.props.placeholder}
-        notFoundContent=""
         style={this.props.style}
         defaultActiveFirstOption={false}
         showArrow={false}
diff --git a/components/select/index.tsx b/components/select/index.tsx
index 5762019585..7c7c6faa41 100755
--- a/components/select/index.tsx
+++ b/components/select/index.tsx
@@ -134,8 +134,9 @@ export default class Select extends React.Component<SelectProps, {}> {
       combobox: isCombobox,
     };
 
+    // AutoComplete don't have notFoundContent defaultly
     const notFoundContentLocale = isCombobox ?
-      null : notFoundContent || locale.notFoundContent;
+      (notFoundContent || '') : (notFoundContent || locale.notFoundContent);
     return (
       <RcSelect
         {...restProps}