diff --git a/releases/net471/KnownIssues/493108-WPF InvalidCastException when displaying a checked MenuItem.md b/releases/net471/KnownIssues/493108-WPF InvalidCastException when displaying a checked MenuItem.md
index 2d9995e..50ee11b 100644
--- a/releases/net471/KnownIssues/493108-WPF InvalidCastException when displaying a checked MenuItem.md	
+++ b/releases/net471/KnownIssues/493108-WPF InvalidCastException when displaying a checked MenuItem.md	
@@ -1,6 +1,6 @@
-## WPF InvalidCastException when displaying a checked MenuItem
+# WPF InvalidCastException when displaying a checked MenuItem
 
-### Symptoms
+## Symptoms
 WPF throws an InvalidCastException when an application displays a MenuItem,
 provided the following conditions are all met:
 
@@ -21,7 +21,7 @@ and the callstack begins with
 	at System.Windows.Shapes.Shape.GetNaturalSize()
 	at System.Windows.Shapes.Shape.MeasureOverride()
 
-### Cause
+## Cause
 The exception is due to a resource key conflict between the ribbon library and the theme
 file for server machines (PresentationFramework.AeroLite.dll).  Both declare resources
 using the same key.  The theme file includes a DynamicResource reference intended to find
@@ -29,5 +29,5 @@ the Geometry describing the MenuItem's checkmark, but in the circumstances descr
 the reference resolves to the ribbon library's resource.  This effectively sets the value
 of Path.Data to an object of type Style.  The next measure pass then encounters the exception.
 
-### Resolution
+## Resolution
 This issue is fixed for all supported OS platforms prior to Windows 10 Fall Creators Update. The fix for Windows 10 Fall Creators Update is expected in a future servicing update.