diff --git a/GUI/View/SampleDesigner/MaterialInplaceForm.cpp b/GUI/View/SampleDesigner/MaterialInplaceForm.cpp
index a3cb3aa494bfe177d9bd0215f95d3b129f79d2e8..a76424ec82d9209400ce230e7a895f6ec82b14b5 100644
--- a/GUI/View/SampleDesigner/MaterialInplaceForm.cpp
+++ b/GUI/View/SampleDesigner/MaterialInplaceForm.cpp
@@ -41,7 +41,7 @@ MaterialInplaceForm::MaterialInplaceForm(QWidget* parent, ItemWithMaterial* item
     m_layout->setContentsMargins(0, 0, 0, 0);
     createWidgets();
 
-    connect(GUI::Model::MaterialModelStore::materialModel(), &MaterialModel::materialChanged, this,
+    connect(gSessionData->projectDocument->materialModel(), &MaterialModel::materialChanged, this,
             &MaterialInplaceForm::onMaterialChanged);
 }