diff --git a/src/window.py b/src/window.py
index 4049233..1a61b30 100644
--- a/src/window.py
+++ b/src/window.py
@@ -53,6 +53,7 @@ class CurtailWindow(Gtk.ApplicationWindow):
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
+        self.set_default_icon_name('com.github.huluti.Curtail')
         self.app = kwargs['application']
 
         self.build_ui()