diff --git a/GUI/Model/Sample/LayerItem.h b/GUI/Model/Sample/LayerItem.h
index 537047a23d3545d2ef75f1d070018b2cac88a997..c6b672cfbcceed24c37c5a9a66fcb1cafc4f3af8 100644
--- a/GUI/Model/Sample/LayerItem.h
+++ b/GUI/Model/Sample/LayerItem.h
@@ -23,7 +23,6 @@
 #include "GUI/Model/Sample/RoughnessItems.h"
 #include <QColor>
 
-class BasicRoughnessItem;
 class ItemWithParticles;
 class ParticleLayoutItem;