diff --git a/resources/qml/Preferences/MaterialsPage.qml b/resources/qml/Preferences/MaterialsPage.qml
index 0b606ced77..ed35a32fdf 100644
--- a/resources/qml/Preferences/MaterialsPage.qml
+++ b/resources/qml/Preferences/MaterialsPage.qml
@@ -195,7 +195,7 @@ UM.ManagementPage
 
     onCurrentItemChanged:
     {
-        if(!currentItem == null)
+        if(currentItem == null)
         {
             return
         }