diff --git a/GUI/Model/Sample/ItemWithMaterial.cpp b/GUI/Model/Sample/ItemWithMaterial.cpp
index 2a78c677afcf4a2f773076efd08c012b3b69f5b3..e84498d867dff5429ece43c550eb0b97ec1f0dd4 100644
--- a/GUI/Model/Sample/ItemWithMaterial.cpp
+++ b/GUI/Model/Sample/ItemWithMaterial.cpp
@@ -16,7 +16,6 @@
 #include "GUI/Model/Job/JobItem.h"
 #include "GUI/Model/Job/JobModelFunctions.h"
 #include "GUI/Model/Material/MaterialItem.h"
-#include "GUI/Model/Material/MaterialItemContainer.h"
 #include "GUI/Model/Material/MaterialModel.h"
 #include <QColor>