diff --git a/angularjs/angular.d.ts b/angularjs/angular.d.ts
index e9175a25ce..2d9469ef80 100644
--- a/angularjs/angular.d.ts
+++ b/angularjs/angular.d.ts
@@ -1715,6 +1715,12 @@ declare namespace angular {
          * Whether transclusion is enabled. Enabled by default.
          */
         transclude?: boolean | string | {[slot: string]: string};
+        /**
+         * Requires the controllers of other directives and binds them to this component's controller.
+         * The object keys specify the property names under which the required controllers (object values) will be bound.
+         * Note that the required controllers will not be available during the instantiation of the controller,
+         * but they are guaranteed to be available just before the $onInit method is executed!
+         */
         require?: {[controller: string]: string};
     }