diff --git a/views/ngXosLib/xosHelpers/src/services/helpers/ui/form.helpers.js b/views/ngXosLib/xosHelpers/src/services/helpers/ui/form.helpers.js
index bc6a503..0a9d3ec 100644
--- a/views/ngXosLib/xosHelpers/src/services/helpers/ui/form.helpers.js
+++ b/views/ngXosLib/xosHelpers/src/services/helpers/ui/form.helpers.js
@@ -60,7 +60,7 @@
       }
 
       // if null return string
-      if(typeof value === 'string' || value === null){
+      if(angular.isString(value) || value === null){
         return 'text';
       }