diff --git a/src/picker/PickerColumn.tsx b/src/picker/PickerColumn.tsx
index 1fd763029..3068f45e2 100644
--- a/src/picker/PickerColumn.tsx
+++ b/src/picker/PickerColumn.tsx
@@ -38,8 +38,6 @@ export type PickerOption =
       [key: string]: any;
     };
 
-export type PickerPlainColumn = PickerOption[];
-
 export type PickerObjectColumn = {
   values?: PickerOption[];
   children?: PickerColumn;
@@ -49,7 +47,7 @@ export type PickerObjectColumn = {
   [key: string]: any;
 };
 
-export type PickerColumn = PickerPlainColumn | PickerObjectColumn;
+export type PickerColumn = PickerOption[] | PickerObjectColumn;
 
 function isOptionDisabled(option: PickerOption) {
   return isObject(option) && option.disabled;