diff --git a/app/menu.js b/app/menu.js
index 144a59e5..ae4de9f1 100644
--- a/app/menu.js
+++ b/app/menu.js
@@ -2,6 +2,7 @@ const os = require('os');
 const path = require('path');
 const {app, shell, dialog} = require('electron');
 
+const isMac = process.platform === 'darwin';
 const appName = app.getName();
 
 // based on and inspired by
@@ -59,7 +60,7 @@ module.exports = function createMenu({createWindow, updatePlugins}) {
   };
 
   const shellOrFileMenu = {
-    label: process.platform === 'darwin' ? 'Shell' : 'File',
+    label: isMac ? 'Shell' : 'File',
     submenu: [
       {
         label: 'New Window',
@@ -84,7 +85,7 @@ module.exports = function createMenu({createWindow, updatePlugins}) {
       },
       {
         label: 'Split Vertically',
-        accelerator: 'Ctrl+Shift+E',
+        accelerator: isMac ? 'Cmd+D' : 'Ctrl+Shift+E',
         click(item, focusedWindow) {
           if (focusedWindow) {
             focusedWindow.rpc.emit('split request vertical');
@@ -93,7 +94,7 @@ module.exports = function createMenu({createWindow, updatePlugins}) {
       },
       {
         label: 'Split Horizontally',
-        accelerator: 'Ctrl+Shift+O',
+        accelerator: isMac ? 'Cmd+Shift+D' : 'Ctrl+Shift+O',
         click(item, focusedWindow) {
           if (focusedWindow) {
             focusedWindow.rpc.emit('split request horizontal');
@@ -113,7 +114,7 @@ module.exports = function createMenu({createWindow, updatePlugins}) {
         }
       },
       {
-        label: process.platform === 'darwin' ? 'Close Terminal Window' : 'Quit',
+        label: isMac ? 'Close Terminal Window' : 'Quit',
         role: 'close',
         accelerator: 'CmdOrCtrl+Shift+W'
       }
@@ -159,7 +160,7 @@ module.exports = function createMenu({createWindow, updatePlugins}) {
     ]
   };
 
-  if (process.platform !== 'darwin') {
+  if (!isMac) {
     editMenu.submenu.push(
       {type: 'separator'},
       {
@@ -199,7 +200,7 @@ module.exports = function createMenu({createWindow, updatePlugins}) {
       },
       {
         label: 'Toggle Developer Tools',
-        accelerator: process.platform === 'darwin' ? 'Alt+Command+I' : 'Ctrl+Shift+I',
+        accelerator: isMac ? 'Alt+Command+I' : 'Ctrl+Shift+I',
         click(item, focusedWindow) {
           if (focusedWindow) {
             focusedWindow.webContents.toggleDevTools();
@@ -342,7 +343,7 @@ ${process.platform} ${process.arch} ${os.release()}`;
     ]
   };
 
-  if (process.platform !== 'darwin') {
+  if (!isMac) {
     helpMenu.submenu.push(
       {type: 'separator'},
       {
@@ -361,7 +362,7 @@ ${process.platform} ${process.arch} ${os.release()}`;
   }
 
   const menu = [].concat(
-    process.platform === 'darwin' ? osxApplicationMenu : [],
+    isMac ? osxApplicationMenu : [],
     shellOrFileMenu,
     editMenu,
     viewMenu,
diff --git a/lib/containers/hyperterm.js b/lib/containers/hyperterm.js
index 41cdfbc6..31414a35 100644
--- a/lib/containers/hyperterm.js
+++ b/lib/containers/hyperterm.js
@@ -4,7 +4,6 @@ import React from 'react';
 import Component from '../component';
 import {connect} from '../utils/plugins';
 import * as uiActions from '../actions/ui';
-import * as termGroupActions from '../actions/term-groups';
 
 import HeaderContainer from './header';
 import TermsContainer from './terms';
@@ -35,7 +34,7 @@ class HyperTerm extends Component {
   }
 
   attachKeyListeners() {
-    const {moveTo, moveLeft, moveRight, splitHorizontal, splitVertical} = this.props;
+    const {moveTo, moveLeft, moveRight} = this.props;
     const term = this.terms.getActiveTerm();
     if (!term) {
       return;
@@ -43,11 +42,6 @@ class HyperTerm extends Component {
     const lastIndex = this.terms.getLastTermIndex();
     const document = term.getTermDocument();
     const keys = new Mousetrap(document);
-    if (process.platform === 'darwin') {
-      keys.bind('command+d', splitVertical);
-      keys.bind('command+shift+d', splitHorizontal);
-    }
-
     keys.bind('command+1', moveTo.bind(this, 0));
     keys.bind('command+2', moveTo.bind(this, 1));
     keys.bind('command+3', moveTo.bind(this, 2));
@@ -158,14 +152,6 @@ const HyperTermContainer = connect(
 
       moveRight: () => {
         dispatch(uiActions.moveRight());
-      },
-
-      splitHorizontal: () => {
-        dispatch(termGroupActions.requestHorizontalSplit());
-      },
-
-      splitVertical: () => {
-        dispatch(termGroupActions.requestVerticalSplit());
       }
     };
   },
diff --git a/lib/hterm.js b/lib/hterm.js
index 501cc69f..4cecaebb 100644
--- a/lib/hterm.js
+++ b/lib/hterm.js
@@ -3,14 +3,6 @@ import fromCharCode from './utils/key-code';
 
 const selection = require('./utils/selection');
 
-// Keys that are used in combination
-// with ctrl based hotkeys:
-const IGNORED_CTRL_KEYS = [
-  'Tab',
-  'KeyO',
-  'KeyE'
-];
-
 hterm.defaultStorage = new lib.Storage.Memory();
 
 // Provide selectAll to terminal viewport
@@ -137,7 +129,7 @@ hterm.Keyboard.prototype.onKeyDown_ = function (e) {
     e.preventDefault();
   }
 
-  if (e.metaKey || e.altKey || (e.ctrlKey && IGNORED_CTRL_KEYS.includes(e.code))) {
+  if (e.metaKey || e.altKey || (e.ctrlKey && e.code === 'Tab')) {
     return;
   }
   if ((!e.ctrlKey || e.code !== 'ControlLeft') && !e.shiftKey && e.code !== 'CapsLock') {