diff --git a/xml/System.IO/File.xml b/xml/System.IO/File.xml
index ac8e432fa61..a40e5464044 100644
--- a/xml/System.IO/File.xml
+++ b/xml/System.IO/File.xml
@@ -4624,7 +4624,11 @@ The following example moves a file.
   
  -or-  
   
- The caller does not have the required permission.</exception>
+The caller does not have the required permission.
+
+-or
+
+<paramref name="sourceFileName" /> and <paramref name="destinationFileName" /> specify the same existing directory.</exception>
       </Docs>
     </Member>
     <Member MemberName="Replace">
@@ -4735,7 +4739,11 @@ The following example moves a file.
   
  -or-  
   
- The caller does not have the required permission.</exception>
+The caller does not have the required permission.
+
+-or
+
+<paramref name="sourceFileName" /> and <paramref name="destinationFileName" /> specify the same existing directory.</exception>
       </Docs>
     </Member>
     <Member MemberName="ResolveLinkTarget">