diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 9dbd5d4e..ca98bd43 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -562,8 +562,8 @@ getJasmineRequireObj().Env = function(j$) {
       return topSuite;
     };
 
-    this.execute = function() {
-      var runnablesToRun = [topSuite.id];
+    this.execute = function(runnablesToRun) {
+      runnablesToRun = runnablesToRun || [topSuite.id];
 
       var allFns = [];
       for(var i = 0; i < runnablesToRun.length; i++) {
diff --git a/spec/core/integration/EnvSpec.js b/spec/core/integration/EnvSpec.js
index f6871f1a..ab8f2149 100644
--- a/spec/core/integration/EnvSpec.js
+++ b/spec/core/integration/EnvSpec.js
@@ -460,6 +460,44 @@ describe("Env integration", function() {
     env.execute();
   });
 
+
+
+  it("Allows specifying which specs and suites to run", function(done) {
+    var env = new j$.Env(),
+        calls = [],
+        suiteCallback = jasmine.createSpy('suite callback'),
+        firstSpec,
+        secondSuite;
+
+    var assertions = function() {
+      expect(calls).toEqual([
+        'third spec',
+        'first spec'
+      ]);
+      expect(suiteCallback).toHaveBeenCalled();
+      done();
+    };
+
+    env.addReporter({jasmineDone: assertions, suiteDone: suiteCallback});
+
+    env.describe("first suite", function() {
+      firstSpec = env.it("first spec", function() {
+        calls.push('first spec');
+      });
+      env.it("second spec", function() {
+        calls.push('second spec');
+      });
+    });
+
+    secondSuite = env.describe("second suite", function() {
+      env.it("third spec", function() {
+        calls.push('third spec');
+      });
+    });
+
+    env.execute([secondSuite.id, firstSpec.id]);
+  });
+
   it("Functions can be spied on and have their calls tracked", function (done) {
       var env = new j$.Env();
 
diff --git a/src/core/Env.js b/src/core/Env.js
index a6d61e00..0faba997 100644
--- a/src/core/Env.js
+++ b/src/core/Env.js
@@ -193,8 +193,8 @@ getJasmineRequireObj().Env = function(j$) {
       return topSuite;
     };
 
-    this.execute = function() {
-      var runnablesToRun = [topSuite.id];
+    this.execute = function(runnablesToRun) {
+      runnablesToRun = runnablesToRun || [topSuite.id];
 
       var allFns = [];
       for(var i = 0; i < runnablesToRun.length; i++) {