diff --git a/windows/configuration/wcd/wcd-start.md b/windows/configuration/wcd/wcd-start.md
index 186c30961e..904711ae31 100644
--- a/windows/configuration/wcd/wcd-start.md
+++ b/windows/configuration/wcd/wcd-start.md
@@ -27,7 +27,10 @@ Use Start settings to apply a customized Start screen to devices.
 
 ## StartLayout
 
-Use StartLayout to select the LayoutModification.xml file that applies a customized Start screen to a device.
+Use StartLayout to select the `LayoutModification.xml` file that applies a customized Start screen to a mobile device.
+
+>[!NOTE]
+>The XML file that defines the Start layout for Windows 10 Mobile must be named `LayoutModification.xml`.
 
 For more information, see [Start layout XML for mobile editions of Windows 10 ](../mobile-devices/lockdown-xml.md)).