diff --git a/lib/check-signature.js b/lib/check-signature.js
index 8f3d5edad..6ffd6329e 100644
--- a/lib/check-signature.js
+++ b/lib/check-signature.js
@@ -1,3 +1,5 @@
+/* jshint esversion: 6 */
+/* global process */
 const Nacl = require('tweetnacl/nacl-fast');
 
 // XXX npm "os" and "child_process"
@@ -7,7 +9,7 @@ const Nacl = require('tweetnacl/nacl-fast');
 console.log('New child process', process.pid);
 
 process.on('message', function (data) {
-    console.log('In process', process.pid)
+    console.log('In process', process.pid);
     console.log(+new Date(), "Message received by subprocess");
     if (!data || !data.key || !data.msg || !data.txid) {
         process.send({
diff --git a/lib/commands/core.js b/lib/commands/core.js
index bb5156749..030aaf4ca 100644
--- a/lib/commands/core.js
+++ b/lib/commands/core.js
@@ -3,7 +3,7 @@
 const Core = module.exports;
 const Util = require("../common-util");
 const escapeKeyCharacters = Util.escapeKeyCharacters;
-const { fork } = require('child_process');
+//const { fork } = require('child_process');
 
 /*  Use Nacl for checking signatures of messages */
 const Nacl = require("tweetnacl/nacl-fast");