diff --git a/atom/browser/api/atom_api_window.cc b/atom/browser/api/atom_api_window.cc
index f64b0408274..9a4ae5850dc 100644
--- a/atom/browser/api/atom_api_window.cc
+++ b/atom/browser/api/atom_api_window.cc
@@ -853,7 +853,7 @@ void Window::RefreshTouchBarItem(const std::string& item_id) {
   window_->RefreshTouchBarItem(item_id);
 }
 
-void Window::SetEscapeTouchBarItem(const mate::PersistentDictionary item) {
+void Window::SetEscapeTouchBarItem(const mate::PersistentDictionary& item) {
   window_->SetEscapeTouchBarItem(item);
 }
 
diff --git a/atom/browser/api/atom_api_window.h b/atom/browser/api/atom_api_window.h
index c7b6a37265b..24afec354df 100644
--- a/atom/browser/api/atom_api_window.h
+++ b/atom/browser/api/atom_api_window.h
@@ -208,7 +208,7 @@ class Window : public mate::TrackableObject<Window>,
   void SetVibrancy(mate::Arguments* args);
   void SetTouchBar(const std::vector<mate::PersistentDictionary>& items);
   void RefreshTouchBarItem(const std::string& item_id);
-  void SetEscapeTouchBarItem(const mate::PersistentDictionary item);
+  void SetEscapeTouchBarItem(const mate::PersistentDictionary& item);
 
   v8::Local<v8::Value> WebContents(v8::Isolate* isolate);
 
diff --git a/atom/browser/native_window.cc b/atom/browser/native_window.cc
index 4866e4294ca..413c756cdc3 100644
--- a/atom/browser/native_window.cc
+++ b/atom/browser/native_window.cc
@@ -347,7 +347,7 @@ void NativeWindow::SetTouchBar(
 void NativeWindow::RefreshTouchBarItem(const std::string& item_id) {
 }
 
-void NativeWindow::SetEscapeTouchBarItem(const mate::PersistentDictionary item) {
+void NativeWindow::SetEscapeTouchBarItem(const mate::PersistentDictionary& item) {
 }
 
 void NativeWindow::FocusOnWebView() {
diff --git a/atom/browser/native_window.h b/atom/browser/native_window.h
index 3de57895e52..227e28c1e46 100644
--- a/atom/browser/native_window.h
+++ b/atom/browser/native_window.h
@@ -174,7 +174,7 @@ class NativeWindow : public base::SupportsUserData,
   virtual void SetTouchBar(
       const std::vector<mate::PersistentDictionary>& items);
   virtual void RefreshTouchBarItem(const std::string& item_id);
-  virtual void SetEscapeTouchBarItem(const mate::PersistentDictionary item);
+  virtual void SetEscapeTouchBarItem(const mate::PersistentDictionary& item);
 
   // Webview APIs.
   virtual void FocusOnWebView();
diff --git a/atom/browser/native_window_mac.h b/atom/browser/native_window_mac.h
index 80ae8895aa1..a535cdb4bef 100644
--- a/atom/browser/native_window_mac.h
+++ b/atom/browser/native_window_mac.h
@@ -103,7 +103,7 @@ class NativeWindowMac : public NativeWindow,
   void SetTouchBar(
       const std::vector<mate::PersistentDictionary>& items) override;
   void RefreshTouchBarItem(const std::string& item_id) override;
-  void SetEscapeTouchBarItem(const mate::PersistentDictionary item) override;
+  void SetEscapeTouchBarItem(const mate::PersistentDictionary& item) override;
 
   // content::RenderWidgetHost::InputEventObserver:
   void OnInputEvent(const blink::WebInputEvent& event) override;
diff --git a/atom/browser/native_window_mac.mm b/atom/browser/native_window_mac.mm
index 7cbb8e2dffd..438bab6e5af 100644
--- a/atom/browser/native_window_mac.mm
+++ b/atom/browser/native_window_mac.mm
@@ -411,7 +411,7 @@ enum {
 }
 
 -(void)setEscapeTouchBarItem:(mate::PersistentDictionary)item {
-  if (self.touchBar && atom_touch_bar_)
+  if (atom_touch_bar_ && self.touchBar)
     [atom_touch_bar_ setEscapeTouchBarItem:item forTouchBar:self.touchBar];
 }
 
@@ -1422,7 +1422,7 @@ void NativeWindowMac::RefreshTouchBarItem(const std::string& item_id) {
   [window_ refreshTouchBarItem:item_id];
 }
 
-void NativeWindowMac::SetEscapeTouchBarItem(const mate::PersistentDictionary item) {
+void NativeWindowMac::SetEscapeTouchBarItem(const mate::PersistentDictionary& item) {
   [window_ setEscapeTouchBarItem:item];
 }
 
diff --git a/atom/browser/ui/cocoa/atom_touch_bar.h b/atom/browser/ui/cocoa/atom_touch_bar.h
index 8232e56f0a1..26662cf4850 100644
--- a/atom/browser/ui/cocoa/atom_touch_bar.h
+++ b/atom/browser/ui/cocoa/atom_touch_bar.h
@@ -31,8 +31,8 @@
 - (NSTouchBar*)touchBarFromItemIdentifiers:(NSMutableArray*)items;
 - (NSMutableArray*)identifiersFromSettings:(const std::vector<mate::PersistentDictionary>&)settings;
 - (void)refreshTouchBarItem:(NSTouchBar*)touchBar id:(const std::string&)item_id;
-- (void)addNonDefaultTouchBarItems:(std::vector<mate::PersistentDictionary>)items;
-- (void)setEscapeTouchBarItem:(mate::PersistentDictionary)item forTouchBar:(NSTouchBar*)touchBar;
+- (void)addNonDefaultTouchBarItems:(const std::vector<mate::PersistentDictionary>&)items;
+- (void)setEscapeTouchBarItem:(const mate::PersistentDictionary&)item forTouchBar:(NSTouchBar*)touchBar;
 
 
 - (NSString*)idFromIdentifier:(NSString*)identifier withPrefix:(NSString*)prefix;
diff --git a/atom/browser/ui/cocoa/atom_touch_bar.mm b/atom/browser/ui/cocoa/atom_touch_bar.mm
index c12434467ee..3a8037b1c5f 100644
--- a/atom/browser/ui/cocoa/atom_touch_bar.mm
+++ b/atom/browser/ui/cocoa/atom_touch_bar.mm
@@ -147,11 +147,11 @@ static NSString* const ImageScrubberItemIdentifier = @"scrubber.image.item";
   }
 }
 
-- (void)addNonDefaultTouchBarItems:(std::vector<mate::PersistentDictionary>)items {
+- (void)addNonDefaultTouchBarItems:(const std::vector<mate::PersistentDictionary>&)items {
   [self identifiersFromSettings:items];
 }
 
-- (void)setEscapeTouchBarItem:(mate::PersistentDictionary)item forTouchBar:(NSTouchBar*)touchBar {
+- (void)setEscapeTouchBarItem:(const mate::PersistentDictionary&)item forTouchBar:(NSTouchBar*)touchBar {
   std::string type;
   std::string item_id;
   NSTouchBarItemIdentifier identifier = nil;
diff --git a/docs/api/touch-bar.md b/docs/api/touch-bar.md
index d5496b8b3f7..54315d79773 100644
--- a/docs/api/touch-bar.md
+++ b/docs/api/touch-bar.md
@@ -18,7 +18,7 @@ removed in future Electron releases.
 
 The following methods are available on instances of `TouchBar`:
 
-#### `touchBar.replaceEscapeItem([touchBarItem])`
+#### `touchBar.setEscapeItem([touchBarItem])`
 
 * `touchBarItem` (TouchBarButton | TouchBarColorPicker | TouchBarGroup | TouchBarLabel | TouchBarPopover | TouchBarScrubber | TouchBarSegmentedControl | TouchBarSlider | TouchBarSpacer) - (Optional) The touch bar item to replace the escape button with
 
diff --git a/lib/browser/api/touch-bar.js b/lib/browser/api/touch-bar.js
index 68cd6238616..1af18dfbe76 100644
--- a/lib/browser/api/touch-bar.js
+++ b/lib/browser/api/touch-bar.js
@@ -50,13 +50,13 @@ class TouchBar extends EventEmitter {
     })
   }
 
-  replaceEscapeItem(item) {
+  setEscapeItem(item) {
     if (!item) item = {}
     Object.keys(this.windows).forEach((windowID) => {
       const window = this.windows[windowID]
       window._setEscapeTouchBarItem(item)
     })
-    this._escape = item;
+    this._escape = item
   }
 
   _addToWindow (window) {
@@ -90,7 +90,7 @@ class TouchBar extends EventEmitter {
     }
     window.once('closed', removeListeners)
     this.windowListeners[id] = removeListeners
-    this.windows[id] = window;
+    this.windows[id] = window
 
     window._setTouchBarItems(this.ordereredItems)