diff --git a/lib/authutil.js b/lib/authutil.js
index ea8ba6e3..ef9531fa 100644
--- a/lib/authutil.js
+++ b/lib/authutil.js
@@ -43,8 +43,9 @@ function writeRegistryToFile(registryUrl, fileLocation, alwaysAuth) {
         });
     }
     // Remove http: or https: from front of registry.
-    const authString = registryUrl.replace(/(^\w+:|^)/, '')
-        + ':_authToken=' + process.env['NODE_AUTH_TOKEN'];
+    const authString = registryUrl.replace(/(^\w+:|^)/, '') +
+        ':_authToken=' +
+        process.env['NODE_AUTH_TOKEN'];
     const registryString = scope
         ? `${scope}:registry=${registryUrl}`
         : `registry=${registryUrl}`;