diff --git a/mocha/mocha-tests.ts b/mocha/mocha-tests.ts
index 597d9cbe2..672fac1cb 100644
--- a/mocha/mocha-tests.ts
+++ b/mocha/mocha-tests.ts
@@ -12,6 +12,18 @@ function test_describe() {
     });
 }
 
+function test_context() {
+    context('some context', () => { });
+
+    context.only('some context', () => { });
+
+    context.skip('some context', () => { });
+
+    context('some context', function() {
+        this.timeout(2000);
+    });
+}
+
 function test_it() {
 
     it('does something', () => { });
diff --git a/mocha/mocha.d.ts b/mocha/mocha.d.ts
index 9b55761c6..ce0f15b38 100644
--- a/mocha/mocha.d.ts
+++ b/mocha/mocha.d.ts
@@ -1,6 +1,6 @@
 // Type definitions for mocha 1.17.1
 // Project: http://visionmedia.github.io/mocha/
-// Definitions by: Kazi Manzur Rashid <https://github.com/kazimanzurrashid/>
+// Definitions by: Kazi Manzur Rashid <https://github.com/kazimanzurrashid/> and otiai10 <https://github.com/otiai10>
 // DefinitelyTyped: https://github.com/borisyankov/DefinitelyTyped
 
 interface Mocha {
@@ -59,6 +59,14 @@ declare var describe : {
     timeout(ms: number): void;
 }
 
+// alias for `describe`
+declare var context : {
+    (contextTitle: string, spec: () => void): void;
+    only(contextTitle: string, spec: () => void): void;
+    skip(contextTitle: string, spec: () => void): void;
+    timeout(ms: number): void;
+}
+
 declare var it: {
     (expectation: string, assertion?: () => void): void;
     (expectation: string, assertion?: (done: MochaDone) => void): void;