diff --git a/tests/es6-class.d.ts b/tests/es6-class.d.ts
index 33f0345e..0e6ab3ef 100644
--- a/tests/es6-class.d.ts
+++ b/tests/es6-class.d.ts
@@ -10,6 +10,7 @@ declare module 'component' {
   export interface ComponentOptionalObjectWithShape {
     color?: string;
     fontSize?: number;
+    "aria-label"?: string;
   }
 
   export type ComponentRequiredUnion = ((...args: any[])=>any) | boolean;
diff --git a/tests/es6-class.jsx b/tests/es6-class.jsx
index 60cc4d59..aaab6179 100644
--- a/tests/es6-class.jsx
+++ b/tests/es6-class.jsx
@@ -32,7 +32,8 @@ Component.propTypes = {
 	//optionalObjectOf: React.PropTypes.objectOf(React.PropTypes.number),
 	optionalObjectWithShape: React.PropTypes.shape({
 		color: React.PropTypes.string,
-		fontSize: React.PropTypes.number
+		fontSize: React.PropTypes.number,
+		'aria-label': React.PropTypes.string,
 	}),
 	requiredFunc: React.PropTypes.func.isRequired,
 	requiredAny: React.PropTypes.any.isRequired,