diff --git a/src/filterlist.h b/src/filterlist.h
index c28b08c0e..f572762e7 100644
--- a/src/filterlist.h
+++ b/src/filterlist.h
@@ -9,7 +9,6 @@ namespace Ui
 class MainWindow;
 };
 class CategoryFactory;
-class PluginContainer;
 class Settings;
 class OrganizerCore;