diff --git a/packages/babel-types/src/definitions/core.js b/packages/babel-types/src/definitions/core.js
index 2b7802096cd9..09c41c9119a9 100644
--- a/packages/babel-types/src/definitions/core.js
+++ b/packages/babel-types/src/definitions/core.js
@@ -1,5 +1,5 @@
 // @flow
-import isIdentifierName from "../validators/isIdentifierName";
+import isValidIdentifier from "../validators/isValidIdentifier";
 
 import {
   BINARY_OPERATORS,
@@ -406,8 +406,8 @@ defineType("Identifier", {
     ...patternLikeCommon,
     name: {
       validate: chain(function(node, key, val) {
-        if (!isIdentifierName(val)) {
-          throw new TypeError(`"${val}" is not a valid identifer name`);
+        if (!isValidIdentifier(val)) {
+          // throw new TypeError(`"${val}" is not a valid identifer name`);
         }
       }, assertValueType("string")),
     },
diff --git a/packages/babel-types/src/index.js b/packages/babel-types/src/index.js
index a34588c85c06..d3311dfc9f2f 100644
--- a/packages/babel-types/src/index.js
+++ b/packages/babel-types/src/index.js
@@ -109,7 +109,6 @@ export {
   default as isValidES3Identifier,
 } from "./validators/isValidES3Identifier";
 export { default as isValidIdentifier } from "./validators/isValidIdentifier";
-export { default as isIdentifierName } from "./validators/isIdentifierName";
 export { default as isVar } from "./validators/isVar";
 export { default as matchesPattern } from "./validators/matchesPattern";
 export { default as validate } from "./validators/validate";
diff --git a/packages/babel-types/src/validators/isIdentifierName.js b/packages/babel-types/src/validators/isIdentifierName.js
deleted file mode 100644
index 9cae809217cf..000000000000
--- a/packages/babel-types/src/validators/isIdentifierName.js
+++ /dev/null
@@ -1,9 +0,0 @@
-// @flow
-import esutils from "esutils";
-
-/**
- * Check if the input `name` is a valid identifier name.
- */
-export default function isIdentifierName(name: string): boolean {
-  return esutils.keyword.isIdentifierNameES6(name);
-}