diff --git a/src/index.js b/src/index.js
index 17641bb615..6c12426820 100644
--- a/src/index.js
+++ b/src/index.js
@@ -362,6 +362,8 @@ export {
   doTypesOverlap,
   // Asserts a string is a valid GraphQL name.
   assertValidName,
+  // Determine if a string is a valid GraphQL name.
+  isValidNameError,
   // Compares two GraphQLSchemas and detects breaking changes.
   findBreakingChanges,
   findDangerousChanges,
diff --git a/src/utilities/index.js b/src/utilities/index.js
index 3825427c0a..165406fd76 100644
--- a/src/utilities/index.js
+++ b/src/utilities/index.js
@@ -102,7 +102,7 @@ export {
 } from './typeComparators';
 
 // Asserts that a string is a valid GraphQL name
-export { assertValidName } from './assertValidName';
+export { assertValidName, isValidNameError } from './assertValidName';
 
 // Compares two GraphQLSchemas and detects breaking changes.
 export {