diff --git a/src/Header/Header.js b/src/Header/Header.js
index f3e86bd7..4db77eaa 100644
--- a/src/Header/Header.js
+++ b/src/Header/Header.js
@@ -19,7 +19,7 @@ const HeaderPage = ({
   rightToLeft,
   style,
   textStyle,
-  formatDate,
+  formatDate = 'MMM D',
   DayComponent,
   TodayComponent,
   onDayPress,
@@ -171,8 +171,4 @@ WeekViewHeader.propTypes = {
   updateCellsBatchingPeriod: PropTypes.number,
 };
 
-WeekViewHeader.defaultProps = {
-  formatDate: 'MMM D',
-};
-
 export default WeekViewHeader;