diff --git a/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py b/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
index 006b21bc48..b55ea5ebaf 100644
--- a/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
+++ b/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
@@ -47,7 +47,7 @@ def getMetaData() -> Dict[str, Any]:
             },
             "user": {
                 "get_version": upgrade.getCfgVersion,
-                "location": {"./user"}
+                "location": {"./user", "./materials/*"}
             },
             "variant": {
                 "get_version": upgrade.getCfgVersion,
diff --git a/resources/qml/MainWindow/MainWindowHeader.qml b/resources/qml/MainWindow/MainWindowHeader.qml
index 971b275bd8..e3b7e199fa 100644
--- a/resources/qml/MainWindow/MainWindowHeader.qml
+++ b/resources/qml/MainWindow/MainWindowHeader.qml
@@ -30,7 +30,8 @@ Item
         width: UM.Theme.getSize("logo").width
         height: UM.Theme.getSize("logo").height
 
-        mipmap: true
+        sourceSize.width: width
+        sourceSize.height: height
     }
 
     Row
diff --git a/resources/qml/Preferences/Materials/MaterialsSlot.qml b/resources/qml/Preferences/Materials/MaterialsSlot.qml
index fb3cb9607d..2f4847103b 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
@@ -73,11 +73,9 @@ Rectangle
             if (materialSlot.is_favorite)
             {
                 base.materialManager.removeFavorite(material.root_material_id)
-                materialSlot.is_favorite = false
                 return
             }
             base.materialManager.addFavorite(material.root_material_id)
-            materialSlot.is_favorite = true
             return
         }
         style: ButtonStyle