diff --git a/packages/strapi-plugin-content-type-builder/admin/src/components/PopUpRelations/index.js b/packages/strapi-plugin-content-type-builder/admin/src/components/PopUpRelations/index.js
index bcc8a12a6c..48b13a7491 100644
--- a/packages/strapi-plugin-content-type-builder/admin/src/components/PopUpRelations/index.js
+++ b/packages/strapi-plugin-content-type-builder/admin/src/components/PopUpRelations/index.js
@@ -222,8 +222,8 @@ class PopUpRelations extends React.Component {
   );
 
   renderModalBodyRelations = () => {
-    const pluginValue = get(this.props.values, ['params', 'pluginValue']);
-    const header = !isEmpty(pluginValue) && pluginValue !== ' '
+    const pluginValue = get(this.props.values, ['params', 'pluginValue'], '');
+    const header = !isEmpty(pluginValue.trim())
       ? get(this.props.dropDownItems, [
         findIndex(this.props.dropDownItems, {
           name: get(this.props.values, ['params', 'target']),