diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 8a6ee24c..f192fd48 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -308,8 +308,7 @@ getJasmineRequireObj().Env = function(j$) {
   function Env(options) {
     options = options || {};
     var self = this;
-    var global = options.global || j$.getGlobal(),
-      now = options.now || function() { return new Date().getTime(); };
+    var global = options.global || j$.getGlobal();
 
     var catchExceptions = true;
 
@@ -500,13 +499,10 @@ getJasmineRequireObj().Env = function(j$) {
     };
 
     this.execute = function() {
-      var startTime = now();
       this.reporter.jasmineStarted({
         totalSpecsDefined: totalSpecsDefined
       });
-      this.topSuite.execute(function() {
-        self.reporter.jasmineDone({executionTime: now() - startTime});
-      });
+      this.topSuite.execute(self.reporter.jasmineDone);
     };
   }
 
diff --git a/spec/core/EnvSpec.js b/spec/core/EnvSpec.js
index 4e85917e..fbb69b45 100644
--- a/spec/core/EnvSpec.js
+++ b/spec/core/EnvSpec.js
@@ -191,9 +191,7 @@ describe("Env integration", function() {
 
   // TODO: something is wrong with this spec
   it("should report as expected", function(done) {
-    var fakeNow = jasmine.createSpy('fake Date.now'),
-        env = new j$.Env({now: fakeNow}),
-        reporter = jasmine.createSpyObj('fakeReporter', [
+    var reporter = jasmine.createSpyObj('fakeReporter', [
           "jasmineStarted",
           "jasmineDone",
           "suiteStarted",
@@ -208,16 +206,11 @@ describe("Env integration", function() {
       });
       var suiteResult = reporter.suiteStarted.calls[0].args[0];
       expect(suiteResult.description).toEqual("A Suite");
-      expect(reporter.jasmineDone).toHaveBeenCalledWith({
-        executionTime: 1000
-      });
+      expect(reporter.jasmineDone).toHaveBeenCalled();
 
       done();
     });
 
-    fakeNow.andReturn(500);
-    reporter.suiteDone.andCallFake(function() { fakeNow.andReturn(1500); });
-
     env.addReporter(reporter);
 
     env.describe("A Suite", function() {
diff --git a/src/core/Env.js b/src/core/Env.js
index beaad9fb..673e838c 100644
--- a/src/core/Env.js
+++ b/src/core/Env.js
@@ -2,8 +2,7 @@ getJasmineRequireObj().Env = function(j$) {
   function Env(options) {
     options = options || {};
     var self = this;
-    var global = options.global || j$.getGlobal(),
-      now = options.now || function() { return new Date().getTime(); };
+    var global = options.global || j$.getGlobal();
 
     var catchExceptions = true;
 
@@ -194,13 +193,10 @@ getJasmineRequireObj().Env = function(j$) {
     };
 
     this.execute = function() {
-      var startTime = now();
       this.reporter.jasmineStarted({
         totalSpecsDefined: totalSpecsDefined
       });
-      this.topSuite.execute(function() {
-        self.reporter.jasmineDone({executionTime: now() - startTime});
-      });
+      this.topSuite.execute(self.reporter.jasmineDone);
     };
   }