diff --git a/lib/interceptor/cache.js b/lib/interceptor/cache.js
index 666a87ef3e5..b03734aa886 100644
--- a/lib/interceptor/cache.js
+++ b/lib/interceptor/cache.js
@@ -19,7 +19,7 @@ module.exports = (opts = {}) => {
   } = opts
 
   if (typeof opts !== 'object' || opts === null) {
-    throw new TypeError(`expected type of opts to be an Object, got ${store === null ? 'null' : typeof store}`)
+    throw new TypeError(`expected type of opts to be an Object, got ${opts === null ? 'null' : typeof opts}`)
   }
 
   assertCacheStore(store, 'opts.store')