diff --git a/packages/babel-types/src/validators/is.js b/packages/babel-types/src/validators/is.js
index c5db6a4fcf..25cd7c735f 100644
--- a/packages/babel-types/src/validators/is.js
+++ b/packages/babel-types/src/validators/is.js
@@ -6,7 +6,6 @@ import isType from "./isType";
  * Returns whether `node` is of given `type`.
  *
  * For better performance, use this instead of `is[Type]` when `type` is unknown.
- * Optionally, pass `skipAliasCheck` to directly compare `node.type` with `type`.
  */
 export default function is(type: string, node: Object, opts?: Object): boolean {
   if (!node) return false;