diff --git a/test/env.html b/test/env.html
new file mode 100644
index 0000000..09f9299
--- /dev/null
+++ b/test/env.html
@@ -0,0 +1,24 @@
+<html>
+  <head>
+    <title>Tests env</title>
+    <meta charset="utf-8">
+    <link rel="stylesheet" href="../node_modules/mocha/mocha.css" />
+  </head>
+  <body>
+    <div id="mocha"></div>
+    <script src="../node_modules/mocha/mocha.js"></script>
+    <script>
+      mocha.ui('bdd');
+      mocha.reporter('html');
+    </script>
+    <script>
+      console.log(window.mochaPhantomJS.env.FOO);
+      if (window.mochaPhantomJS) {
+        mochaPhantomJS.run();
+      } else {
+        mocha.run();
+      }
+    </script>
+  </body>
+</html>
+
diff --git a/test/lib/mocha-phantomjs.js b/test/lib/mocha-phantomjs.js
index 986248e..860ccb4 100644
--- a/test/lib/mocha-phantomjs.js
+++ b/test/lib/mocha-phantomjs.js
@@ -275,7 +275,7 @@
         });
       });
     });
-    return describe('config', function() {
+    describe('config', function() {
       describe('user-agent', function() {
         /*
         $ ./bin/mocha-phantomjs -R spec test/user-agent.html
@@ -330,6 +330,14 @@
         });
       });
     });
+    return describe('env', function() {
+      return it('has passed environment variables', function(done) {
+        process.env.FOO = 'bar';
+        return this.runner(done, [fileURL('env')], function(code, stdout, stderr) {
+          return expect(stdout).to.match(/^bar/);
+        });
+      });
+    });
   });
 
 }).call(this);
diff --git a/test/src/mocha-phantomjs.coffee b/test/src/mocha-phantomjs.coffee
index 0c3fe4a..6d5e390 100644
--- a/test/src/mocha-phantomjs.coffee
+++ b/test/src/mocha-phantomjs.coffee
@@ -276,3 +276,9 @@ describe 'mocha-phantomjs', ->
       it 'suppresses color output', (done) ->
         @runner done, ['-C', fileURL('mixed')], (code, stdout, stderr) ->
           expect(stdout).to.not.match /\u001b\[\d\dm/
+
+  describe 'env', ->
+    it 'has passed environment variables', (done) ->
+      process.env.FOO = 'bar'
+      @runner done, [fileURL('env')], (code, stdout, stderr) ->
+        expect(stdout).to.match /^bar/
