diff --git a/types/pikaday/index.d.ts b/types/pikaday/index.d.ts
index 63967d3169..fae7acf93a 100644
--- a/types/pikaday/index.d.ts
+++ b/types/pikaday/index.d.ts
@@ -44,7 +44,7 @@ declare class Pikaday {
      * can optionally be passed as the second parameter to prevent triggering
      * of the onSelect callback, allowing the date to be set silently.
      */
-    setDate(date: string | Date, triggerOnSelect?: boolean): void;
+    setDate(date: string | Date, preventOnSelect?: boolean): void;
 
     /**
      * Returns a Moment.js object for the selected date (Moment must be
diff --git a/types/pikaday/pikaday-tests.ts b/types/pikaday/pikaday-tests.ts
index 14250d0df3..984961b99d 100644
--- a/types/pikaday/pikaday-tests.ts
+++ b/types/pikaday/pikaday-tests.ts
@@ -30,6 +30,7 @@ new Pikaday({field: $('#datepicker')[0]});
     picker.toString('YYYY-MM-DD');
     picker.getDate();
     picker.setDate('2015-01-01');
+    picker.setDate('2015-01-01', true);
     picker.getMoment();
     picker.setMoment(moment('14th February 2014', 'DDo MMMM YYYY'));
     picker.setMoment(moment('14th February 2014', 'DDo MMMM YYYY'), true);