diff --git a/app/controllers/course/contentmodules.php b/app/controllers/course/contentmodules.php
index 99f5fc31aa7f84e11568ea6633ba7d4a1c63ceb6..ef2272a889343c850e39e6e10c58c02b7559fb1a 100644
--- a/app/controllers/course/contentmodules.php
+++ b/app/controllers/course/contentmodules.php
@@ -215,7 +215,7 @@ class Course_ContentmodulesController extends AuthenticatedController
         $this->module = PluginManager::getInstance()->getPluginById($module_id);
         $this->metadata = $this->module->getMetadata();
 
-        $this->original_name = $this->metadata['diplayname'] ?? $this->module->getPluginName();
+        $this->original_name = $this->metadata['diplayname'] ?? $this->module->getMetadata()['displayname'];
 
         PageLayout::setTitle(_('Werkzeug umbenennen'));
         $this->tool = ToolActivation::find([$context->id, $module_id]);