--- a/content/base/test/script-1_bug597345.sjs
+++ b/content/base/test/script-1_bug597345.sjs
@@ -1,13 +1,16 @@
+// timer has to be alive so it can't be eaten by the GC.
+var timer;
+
 function handleRequest(request, response)
 {
   response.setHeader("Cache-Control", "no-cache", false);
   response.setHeader("Content-Type", "text/javascript", false);
   // The "stray" open comment at the end of the write is important!
   response.write("document.write(\"<script charset='utf-8' src='script-2_bug597345.js'></script><!--\")");
   response.processAsync();
-  var timer = Components.classes["@mozilla.org/timer;1"]
+  timer = Components.classes["@mozilla.org/timer;1"]
     .createInstance(Components.interfaces.nsITimer);
   timer.initWithCallback(function() {
       response.finish();
     }, 200, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
 }