diff --git a/mozilla/mailnews/base/resources/content/mailCommands.js b/mozilla/mailnews/base/resources/content/mailCommands.js
index 7f7981e0c32..47fc11bf746 100644
--- a/mozilla/mailnews/base/resources/content/mailCommands.js
+++ b/mozilla/mailnews/base/resources/content/mailCommands.js
@@ -509,9 +509,7 @@ function ViewPageSource(messages)
             var url = mailSession.ConvertMsgURIToMsgURL(messages[i], msgWindow);
 
             window.openDialog( "chrome://navigator/content/viewSource.xul",
-                               "_blank",
-                               "scrollbars,resizable,chrome,dialog=no",
-                               url,
+                               "_blank", "all,dialog=no", url,
                                mailCharacterSet);
         }
         return true;