diff --git a/index.js b/index.js
index 2cdf3c5a..4923c8d6 100644
--- a/index.js
+++ b/index.js
@@ -1,7 +1,7 @@
 'use strict'
 
 const fp = require('fastify-plugin')
-let LRU = require("tiny-lru");
+let LRU = require('tiny-lru')
 const routes = require('./lib/routes')
 const { compileQuery } = require('graphql-jit')
 const { Factory } = require('single-user-cache')
@@ -45,6 +45,7 @@ const { kLoaders, kFactory, kSubscriptionFactory, kHooks } = require('./lib/symb
 const { preParsingHandler, preValidationHandler, preExecutionHandler, onResolutionHandler, onGatewayReplaceSchemaHandler } = require('./lib/handlers')
 
 // Required for module bundlers
+// istanbul ignore next
 LRU = typeof LRU === 'function' ? LRU : LRU.default
 
 function buildCache (opts) {
diff --git a/lib/persistedQueryDefaults.js b/lib/persistedQueryDefaults.js
index ac9fe424..7f329b67 100644
--- a/lib/persistedQueryDefaults.js
+++ b/lib/persistedQueryDefaults.js
@@ -1,10 +1,11 @@
 'use strict'
 
 const crypto = require('crypto')
-let LRU = require("tiny-lru")
+let LRU = require('tiny-lru')
 
 // Required for module bundlers
-LRU = typeof LRU === "function" ? LRU : LRU.default
+// istanbul ignore next
+LRU = typeof LRU === 'function' ? LRU : LRU.default
 
 const persistedQueryDefaults = {
   prepared: (persistedQueries) => ({