diff --git a/src/plugins/coreplugin/editormanager/ieditor.h b/src/plugins/coreplugin/editormanager/ieditor.h
index afb9c33dd72..199b4e48c9a 100644
--- a/src/plugins/coreplugin/editormanager/ieditor.h
+++ b/src/plugins/coreplugin/editormanager/ieditor.h
@@ -63,9 +63,6 @@ public:
     virtual QWidget *toolBar() = 0;
 
     virtual bool isDesignModePreferred() const { return false; }
-
-private:
-    Core::Id m_id;
 };
 
 } // namespace Core