diff --git a/resources/skins.vector.js/dropdownMenus.js b/resources/skins.vector.js/dropdownMenus.js
index d031a9120..37ffcfcb2 100644
--- a/resources/skins.vector.js/dropdownMenus.js
+++ b/resources/skins.vector.js/dropdownMenus.js
@@ -102,7 +102,8 @@ function addPortletLinkHandler( item, data ) {
 		}
 	}
 
-	if ( link && iconElement ) {
+	// Check link.prepend exists for older browser since this is ES5 code
+	if ( link && iconElement && link.prepend ) {
 		link.prepend( iconElement );
 	}