diff --git a/src/plugins/datepicker.ts b/src/plugins/datepicker.ts
index 22ce9473cc..57bfe705fc 100644
--- a/src/plugins/datepicker.ts
+++ b/src/plugins/datepicker.ts
@@ -59,7 +59,7 @@ export interface DatePickerOptions {
   /**
    * Shows or hide dates earlier then selected date.
    */
-  allowOldDate?: boolean;
+  allowOldDates?: boolean;
   /**
    * Shows or hide dates after selected date.
    */