diff --git a/atom/browser/native_window_views.cc b/atom/browser/native_window_views.cc
index 42a74286f22b..4ee6d8f9507f 100644
--- a/atom/browser/native_window_views.cc
+++ b/atom/browser/native_window_views.cc
@@ -606,14 +606,11 @@ void NativeWindowViews::SetContentSizeConstraints(
   // this to determine whether native widget has initialized.
   if (widget() && widget()->widget_delegate())
     widget()->OnSizeConstraintsChanged();
-#if defined(OS_WIN) || defined(USE_X11)
   if (resizable_)
     old_size_constraints_ = size_constraints;
-#endif
 }
 
 void NativeWindowViews::SetResizable(bool resizable) {
-#if defined(OS_WIN) || defined(USE_X11)
   if (resizable != resizable_) {
     // On Linux there is no "resizable" property of a window, we have to set
     // both the minimum and maximum size to the window size to achieve it.
@@ -627,7 +624,6 @@ void NativeWindowViews::SetResizable(bool resizable) {
           extensions::SizeConstraints(content_size, content_size));
     }
   }
-#endif
 #if defined(OS_WIN)
   if (has_frame() && thick_frame_)
     FlipWindowStyle(GetAcceleratedWidget(), resizable, WS_THICKFRAME);
@@ -650,11 +646,8 @@ bool NativeWindowViews::IsResizable() {
 #if defined(OS_WIN)
   if (has_frame())
     return ::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME;
-  else
-    return CanResize();
-#else
-  return CanResize();
 #endif
+  return CanResize();
 }
 
 void NativeWindowViews::SetMovable(bool movable) {
diff --git a/atom/browser/native_window_views.h b/atom/browser/native_window_views.h
index 691748e71fff..e91cae21bad7 100644
--- a/atom/browser/native_window_views.h
+++ b/atom/browser/native_window_views.h
@@ -215,6 +215,12 @@ class NativeWindowViews : public NativeWindow,
   bool menu_bar_visible_;
   bool menu_bar_alt_pressed_;
 
+  // The "resizable" flag on Linux is implemented by setting size constraints,
+  // we need to make sure size constraints are restored when window becomes
+  // resizable again. This is also used on Windows, to keep taskbar resize
+  // events from resizing the window.
+  extensions::SizeConstraints old_size_constraints_;
+
 #if defined(USE_X11)
   std::unique_ptr<GlobalMenuBarX11> global_menu_bar_;
 
@@ -224,13 +230,7 @@ class NativeWindowViews : public NativeWindow,
   // To disable the mouse events.
   std::unique_ptr<EventDisabler> event_disabler_;
 #endif
-#if defined(OS_WIN) || defined(USE_X11)
-  // The "resizable" flag on Linux is implemented by setting size constraints,
-  // we need to make sure size constraints are restored when window becomes
-  // resizable again. This is also used on Windows, to keep taskbar resize
-  // events from resizing the window.
-  extensions::SizeConstraints old_size_constraints_;
-#endif
+
 #if defined(OS_WIN)
   // Weak ref.
   AtomDesktopWindowTreeHostWin* atom_desktop_window_tree_host_win_;