diff --git a/docs/10.4-test-utils.md b/docs/10.4-test-utils.md
index 40f22780..9c17f333 100644
--- a/docs/10.4-test-utils.md
+++ b/docs/10.4-test-utils.md
@@ -73,7 +73,7 @@ Returns true if `instance` is a composite component (created with `React.createC
 boolean isCompositeComponentWithType(ReactComponent instance, function componentClass)
 ```
 
-The combination of `isComponentOfType()` and `isCompositeComponent()`.
+Returns true if `instance` is a composite component (created with `React.createClass()`) whose type is of a React `componentClass`.
 
 ### isTextComponent