diff --git a/linux/window_manager_plugin.cc b/linux/window_manager_plugin.cc
index c2c588a..0a28be4 100644
--- a/linux/window_manager_plugin.cc
+++ b/linux/window_manager_plugin.cc
@@ -18,17 +18,18 @@ struct _WindowManagerPlugin {
   FlPluginRegistrar* registrar;
   FlMethodChannel* channel;
   GdkGeometry window_geometry;
-  GtkWidget* _event_box = nullptr;
-  bool _is_prevent_close = false;
-  bool _is_maximized = false;
-  bool _is_minimized = false;
-  bool _is_fullscreen = false;
-  bool _is_always_on_top = false;
-  bool _is_always_on_bottom = false;
-  bool _is_dragging = false;
-  bool _is_resizing = false;
-  gchar* title_bar_style_ = strdup("normal");
-  GdkEventButton _event_button = GdkEventButton{};
+  GtkWidget* _event_box;
+  bool _is_prevent_close;
+  bool _is_frameless;
+  bool _is_maximized;
+  bool _is_minimized;
+  bool _is_fullscreen;
+  bool _is_always_on_top;
+  bool _is_always_on_bottom;
+  bool _is_dragging;
+  bool _is_resizing;
+  gchar* title_bar_style_;
+  GdkEventButton _event_button;
   GdkDevice* grab_pointer;
   GtkCssProvider* css_provider;
 };