diff --git a/src/Gui/PreferencePacks/FreeCAD Classic/FreeCAD Classic.cfg b/src/Gui/PreferencePacks/FreeCAD Classic/FreeCAD Classic.cfg
index 41ab9a4cbc..80ef3b41b3 100644
--- a/src/Gui/PreferencePacks/FreeCAD Classic/FreeCAD Classic.cfg	
+++ b/src/Gui/PreferencePacks/FreeCAD Classic/FreeCAD Classic.cfg	
@@ -81,6 +81,10 @@
         <FCParamGroup Name="Mod">
           <FCParamGroup Name="Start">
             <FCBool Name="FileCardUseStyleSheet" Value="0"/>
+            <FCInt Name="FileThumbnailIconsSize" Value="128"/>
+            <FCUInt Name="FileThumbnailBorderColor" Value="1654713087"/>
+            <FCUInt Name="FileThumbnailBackgroundColor" Value="3554532863"/>
+            <FCUInt Name="FileThumbnailSelectionColor" Value="648178175"/>
           </FCParamGroup>
           <FCParamGroup Name="Arch">
             <FCUInt Name="ColorHelpers" Value="674321151"/>