diff --git a/resources/qml/Menus/ConfigurationMenu/CustomConfiguration.qml b/resources/qml/Menus/ConfigurationMenu/CustomConfiguration.qml
index 606dc142be..29e9cd6353 100644
--- a/resources/qml/Menus/ConfigurationMenu/CustomConfiguration.qml
+++ b/resources/qml/Menus/ConfigurationMenu/CustomConfiguration.qml
@@ -240,10 +240,10 @@ Item
                 {
                     id: materialSelection
 
-                    property bool valueError: Cura.MachineManager.activeStack != null ? Cura.ContainerManager.getContainerMetaDataEntry(Cura.MachineManager.activeStack.material.id, "compatible", "") != "True" : true
+                    property bool valueError: Cura.MachineManager.activeStack !== null ? Cura.ContainerManager.getContainerMetaDataEntry(Cura.MachineManager.activeStack.material.id, "compatible", "") !== "True" : true
                     property bool valueWarning: !Cura.MachineManager.isActiveQualitySupported
 
-                    text: Cura.MachineManager.activeStack != null ? Cura.MachineManager.activeStack.material.name : ""
+                    text: Cura.MachineManager.activeStack !== null ? Cura.MachineManager.activeStack.material.name : ""
                     tooltip: text
 
                     height: UM.Theme.getSize("print_setup_big_item").height
diff --git a/resources/qml/Menus/MaterialMenu.qml b/resources/qml/Menus/MaterialMenu.qml
index 0116169ed6..0264ad8fc7 100644
--- a/resources/qml/Menus/MaterialMenu.qml
+++ b/resources/qml/Menus/MaterialMenu.qml
@@ -97,7 +97,7 @@ Menu
                     id: brandMaterialsMenu
                     title: materialName
                     property string materialName: model.name
-                    property var brandMaterialColors: model.colors
+                    property ListModel brandMaterialColors: model.colors
 
                     Instantiator
                     {