--- a/netwerk/base/src/NetUtil.jsm
+++ b/netwerk/base/src/NetUtil.jsm
@@ -32,24 +32,24 @@
  * use your version of this file under the terms of the MPL, indicate your
  * decision by deleting the provisions above and replace them with the notice
  * and other provisions required by the GPL or the LGPL. If you do not delete
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
-/***
+/**
  * Necko utilities
  */
 
 const Ci = Components.interfaces;
 const Cc = Components.classes;
 
-var NetUtil = {
+const NetUtil = {
     /**
      * Function to perform simple async copying from aSource (an input stream)
      * to aSink (an output stream).  The copy will happen on some background
      * thread.  Both streams will be closed when the copy completes.
      *
      * @param aSource the input stream to read from
      * @param aSink the output stream to write to
      * @param aCallback [optional] a function that will be called at copy