diff --git a/src/xsd4/wix.xsd b/src/xsd4/wix.xsd
index cc94fd3..fc0c66a 100644
--- a/src/xsd4/wix.xsd
+++ b/src/xsd4/wix.xsd
@@ -9575,7 +9575,7 @@
         <xs:annotation>
           <xs:documentation>
             Indicates the compression level for the Media's cabinet. This attribute can
-            only be used in conjunction with the Cabinet attribute. The default is 'mszip'.
+            only be used in conjunction with the Cabinet attribute. The default is 'medium'.
           </xs:documentation>
         </xs:annotation>
       </xs:attribute>