Can't use empty on a function call

diff --git a/plugins/GroupPrivateMessage/GroupPrivateMessagePlugin.php b/plugins/GroupPrivateMessage/GroupPrivateMessagePlugin.php
index 13c46590c35035c73967698b8a58f6e55f70e66e..2fd9e3ef429b71ea211a3d8e978d21ec9133062e 100644 (file)
--- a/plugins/GroupPrivateMessage/GroupPrivateMessagePlugin.php
+++ b/plugins/GroupPrivateMessage/GroupPrivateMessagePlugin.php
@@ -194,7 +194,7 @@ class GroupPrivateMessagePlugin extends Plugin
 
         $gps = null;
 
-        if (!empty($action->getGroup())) {
+        if ($action->getGroup() instanceof User_group) {
             $gps = Group_privacy_settings::getKV('group_id', $action->getGroup()->id);
         }