diff --git a/src/components/NavigationItems.js b/src/components/NavigationItems.js
index 44b52a2f3..80f39fbac 100644
--- a/src/components/NavigationItems.js
+++ b/src/components/NavigationItems.js
@@ -162,7 +162,7 @@ NavigationItems.propTypes = {
 };
 
 NavItem.propTypes = {
-  page: link,
+  page: link.isRequired,
   filteredPageNames: PropTypes.array,
   searchTerm: PropTypes.string,
   depthLevel: PropTypes.number,