diff --git a/resources/qml/Preferences/Materials/MaterialsSlot.qml b/resources/qml/Preferences/Materials/MaterialsSlot.qml
index fb3cb9607d..7c891dc65f 100644
--- a/resources/qml/Preferences/Materials/MaterialsSlot.qml
+++ b/resources/qml/Preferences/Materials/MaterialsSlot.qml
@@ -15,7 +15,7 @@ Rectangle
     id: materialSlot
     property var material: null
     property var hovered: false
-    property var is_favorite: material != null ? material.is_favorite : false
+    property var is_favorite: material != null && material.is_favorite
 
     height: UM.Theme.getSize("favorites_row").height
     width: parent.width