--- src/gcal-window.c
+++ src/gcal-window.c
@@ -1574,6 +1574,8 @@
   gcal_window_add_accelerator (app, "win.change-view(3)",    "<Ctrl>3");
   gcal_window_add_accelerator (app, "win.toggle-search-bar", "<Ctrl>f");
   gcal_window_add_accelerator (app, "app.quit", "<Ctrl>q");
+
+  gtk_window_set_icon_name (self, "org.gnome.Calendar");
 }
 
 /**