diff --git a/docs/typechecking-with-proptypes.md b/docs/typechecking-with-proptypes.md
index 79a74d6c..e3c4abd2 100644
--- a/docs/typechecking-with-proptypes.md
+++ b/docs/typechecking-with-proptypes.md
@@ -107,7 +107,7 @@ MyComponent.propTypes = {
 };
 ```
 
-### Requiring Single Children
+### Requiring Single Child
 
 With `React.PropTypes.element` you can specify that only a single child can be passed to a component as children.