diff --git a/lib/Models/Window.vala b/lib/Models/Window.vala
index 1917f648..e71bda0e 100644
--- a/lib/Models/Window.vala
+++ b/lib/Models/Window.vala
@@ -35,24 +35,11 @@ public class He.Window : Gtk.Window {
         }
         set {
             _parent = value;
+            set_modal(value != null);
             set_transient_for (value);
         }
     }
 
-    private new bool _modal;
-    /**
-     * If this is a modal window.
-     */
-    public new bool modal {
-        get {
-            return this.get_modal ();
-        }
-        set {
-            _modal = value;
-            set_modal (_modal);
-        }
-    }
-
     private bool _has_title;
     /**
      * If the window has a title bar.
diff --git a/lib/Widgets/ApplicationWindow.vala b/lib/Widgets/ApplicationWindow.vala
index 2ac2d95f..3f4e1f51 100644
--- a/lib/Widgets/ApplicationWindow.vala
+++ b/lib/Widgets/ApplicationWindow.vala
@@ -46,20 +46,6 @@ public class He.ApplicationWindow : Gtk.ApplicationWindow {
 
     private new He.AppBar title = new He.AppBar ();
 
-    private new bool _modal;
-    /**
-    * Whether this window is a modal window.
-    */
-    public new bool modal {
-        get {
-            return modal;
-        }
-        set {
-            _modal = value;
-            set_modal (_modal);
-        }
-    }
-
     private bool _has_title;
     /**
     * Whether this window should display a title.