diff --git a/application/common/models/User.php b/application/common/models/User.php
index 835e5bd8..27e63ea8 100644
--- a/application/common/models/User.php
+++ b/application/common/models/User.php
@@ -577,7 +577,9 @@ public function fields(): array
 
                 $externalGroups = explode(',', $model->groups_external);
                 foreach ($externalGroups as $externalGroup) {
-                    $member[] = $externalGroup;
+                    if (!empty($externalGroup)) {
+                        $member[] = $externalGroup;
+                    }
                 }
 
                 $member[] = \Yii::$app->params['idpName'];