diff --git a/kdeplasma-addons/containments/groupingdesktop/lib/groupexplorer/explorerwindow.h b/kdeplasma-addons/containments/groupingdesktop/lib/groupexplorer/explorerwindow.h
index e9adf50c..15e15ad3 100644
--- a/kdeplasma-addons/containments/groupingdesktop/lib/groupexplorer/explorerwindow.h
+++ b/kdeplasma-addons/containments/groupingdesktop/lib/groupexplorer/explorerwindow.h
@@ -33,7 +33,6 @@ namespace Plasma
     class Containment;
     class Corona;
     class FrameSvg;
-    class WidgetExplorer;
 }
 
 class GroupExplorer;