diff --git a/uubench.js b/uubench.js
index 7337165..a1e0edd 100644
--- a/uubench.js
+++ b/uubench.js
@@ -20,14 +20,12 @@ Bench.prototype.run = function(iter) {
   var self = this, fn = self.test,
       checkfn = self.options.type === "adaptive" ? adaptive : fixed,
       i = iter, pend = i,
-      min = self.options.min, start;
+      min = self.options.min, start = self.start;
 
   if (self.loop) {
     pend = 1;
-    start = new Date();
     fn(checkfn, i);
   } else {
-    start = new Date();
     while (i--) {
       fn(checkfn);
     }
@@ -35,14 +33,14 @@ Bench.prototype.run = function(iter) {
 
   function fixed() {
     if (--pend === 0) {
-      var elapsed = new Date() - start;
+      var elapsed = new Date().getTime() - start;
       self.callback({iterations: iter, elapsed: elapsed});
     }
   }
 
   function adaptive() {
     if (--pend === 0) {
-      var elapsed = new Date() - start;
+      var elapsed = new Date().getTime() - start;
       if (elapsed < min) {
         self.run(iter*2);
       } else {
@@ -94,6 +92,7 @@ Suite.prototype.run = function() {
 Suite.prototype.runOne = function(idx) {
   var self = this;
   setTimeout(function() {
+    self.tests[idx].start = new Date().getTime();
     self.tests[idx].run(self.options.iterations);
   }, self.options.delay);
 }
@@ -112,4 +111,4 @@ Suite.prototype.emit = function(type) {
 
 uubench.Suite = Suite;
 
-})(typeof exports !== 'undefined' ? exports : window.uubench = {});
\ No newline at end of file
+})(typeof exports !== 'undefined' ? exports : window.uubench = {});