diff --git a/lib/_http_client.js b/lib/_http_client.js
index 62933d7e70..4718cea9e6 100644
--- a/lib/_http_client.js
+++ b/lib/_http_client.js
@@ -3,7 +3,6 @@
 const util = require('util');
 const net = require('net');
 const url = require('url');
-const EventEmitter = require('events');
 const HTTPParser = process.binding('http_parser').HTTPParser;
 const assert = require('assert').ok;
 const common = require('_http_common');
diff --git a/lib/os.js b/lib/os.js
index 2d537f5384..ddf7cee9d4 100644
--- a/lib/os.js
+++ b/lib/os.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const binding = process.binding('os');
-const util = require('util');
 const internalUtil = require('internal/util');
 const isWindows = process.platform === 'win32';
 
diff --git a/lib/tty.js b/lib/tty.js
index 7c4f80a482..72efcd078b 100644
--- a/lib/tty.js
+++ b/lib/tty.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const util = require('util');
-const internalUtil = require('internal/util');
 const net = require('net');
 const TTY = process.binding('tty_wrap').TTY;
 const isTTY = process.binding('tty_wrap').isTTY;