diff --git a/packages/babel-helpers/src/index.js b/packages/babel-helpers/src/index.js
index 96a5b4cb10..8e9f5ccfd2 100644
--- a/packages/babel-helpers/src/index.js
+++ b/packages/babel-helpers/src/index.js
@@ -2,7 +2,7 @@ import helpers from "./helpers";
 
 export function get(name) {
   let fn = helpers[name];
-  if (!fn) throw ReferenceError;
+  if (!fn) throw new ReferenceError(`Unknown helper ${name}`);
 
   return fn().expression;
 }