diff --git a/test/browser-fixtures/bdd.fixture.js b/test/browser-fixtures/bdd.fixture.js
index 5fe802f74a..90c8dd72d8 100644
--- a/test/browser-fixtures/bdd.fixture.js
+++ b/test/browser-fixtures/bdd.fixture.js
@@ -4,5 +4,5 @@
 
 process.stdout = require('browser-stdout')();
 
-window.mocha.timeout(200)
+window.mocha.timeout(500)
   .ui('bdd');
diff --git a/test/browser-fixtures/exports.fixture.js b/test/browser-fixtures/exports.fixture.js
index a4c25cff99..1ddabc8620 100644
--- a/test/browser-fixtures/exports.fixture.js
+++ b/test/browser-fixtures/exports.fixture.js
@@ -4,5 +4,5 @@
 
 process.stdout = require('browser-stdout')();
 
-window.mocha.timeout(200)
+window.mocha.timeout(500)
   .ui('exports');
diff --git a/test/browser-fixtures/qunit.fixture.js b/test/browser-fixtures/qunit.fixture.js
index 79b49498d5..2c0b642100 100644
--- a/test/browser-fixtures/qunit.fixture.js
+++ b/test/browser-fixtures/qunit.fixture.js
@@ -4,5 +4,5 @@
 
 process.stdout = require('browser-stdout')();
 
-window.mocha.timeout(200)
+window.mocha.timeout(500)
   .ui('qunit');
diff --git a/test/browser-fixtures/tdd.fixture.js b/test/browser-fixtures/tdd.fixture.js
index 2fdc8f758c..a36040b17f 100644
--- a/test/browser-fixtures/tdd.fixture.js
+++ b/test/browser-fixtures/tdd.fixture.js
@@ -4,5 +4,5 @@
 
 process.stdout = require('browser-stdout')();
 
-window.mocha.timeout(200)
+window.mocha.timeout(500)
   .ui('tdd');
diff --git a/test/unit/context.spec.js b/test/unit/context.spec.js
index cbcdedb49d..a73fc86210 100644
--- a/test/unit/context.spec.js
+++ b/test/unit/context.spec.js
@@ -68,6 +68,6 @@ describe('Context Siblings', function () {
 
 describe('timeout()', function () {
   it('should return the timeout', function () {
-    expect(this.timeout()).to.equal(200);
+    expect(this.timeout()).to.equal(!process.browser ? 200 : 500);
   });
 });