diff --git a/lib/browser/api/menu.js b/lib/browser/api/menu.js
index 9877d81bb9b6..b123c8e46bbd 100644
--- a/lib/browser/api/menu.js
+++ b/lib/browser/api/menu.js
@@ -16,31 +16,19 @@ Menu.prototype._init = function () {
   this.groupsMap = {}
   this.items = []
   this.delegate = {
-    isCommandIdChecked: (commandId) => {
-      var command = this.commandsMap[commandId]
-      return command != null ? command.checked : undefined
-    },
-    isCommandIdEnabled: (commandId) => {
-      var command = this.commandsMap[commandId]
-      return command != null ? command.enabled : undefined
-    },
-    isCommandIdVisible: (commandId) => {
-      var command = this.commandsMap[commandId]
-      return command != null ? command.visible : undefined
-    },
-    getAcceleratorForCommandId: (commandId, useDefaultAccelerator) => {
-      const command = this.commandsMap[commandId]
-      if (command == null) return
-      if (command.accelerator != null) return command.accelerator
+    isCommandIdChecked: id => this.commandsMap[id].checked,
+    isCommandIdEnabled: id => this.commandsMap[id].enabled,
+    isCommandIdVisible: id => this.commandsMap[id].visible,
+    getAcceleratorForCommandId: (id, useDefaultAccelerator) => {
+      const command = this.commandsMap[id]
+      if (command === null) return
+      if (command.accelerator !== null) return command.accelerator
       if (useDefaultAccelerator) return command.getDefaultRoleAccelerator()
     },
-    getIconForCommandId: (commandId) => {
-      var command = this.commandsMap[commandId]
-      return command != null ? command.icon : undefined
-    },
-    executeCommand: (event, commandId) => {
-      const command = this.commandsMap[commandId]
-      if (command == null) return
+    getIconForCommandId: id => this.commandsMap[id].icon,
+    executeCommand: (event, id) => {
+      const command = this.commandsMap[id]
+      if (command === null) return
       command.click(event, BrowserWindow.getFocusedWindow(), webContents.getFocusedWebContents())
     },
     menuWillShow: () => {