--- a/testing/mochitest/browser-harness.xul
+++ b/testing/mochitest/browser-harness.xul
@@ -205,17 +205,17 @@
         var path = _entityEncode(this.path);
         var html = this.results.map(function (t) {
           var class = t.info ? "info" : "result " + (t.pass ? "passed" : "failed");
           return "<p class=\"" + class + "\">" + t.result + " | " + path +
                  " | " + _entityEncode(t.msg) + "</p>";
         }).join("\n");
         if (this.duration) {
           html += "<p class=\"info\">TEST-END | " + path + " | finished in " +
-                  this.duration + " ms";
+                  this.duration + " ms</p>";
         }
         return html;
       }
     };
 
     // Returns an array of browserTest objects for all the selected tests
     function listTests() {
       var baseURL = 'chrome://mochitests/content';