diff --git a/src/window.py b/src/window.py
index e38069b..607f268 100644
--- a/src/window.py
+++ b/src/window.py
@@ -964,7 +964,6 @@ class RosterWindow(Adw.ApplicationWindow):
             item.connect('manage-environments-requested', self._on_manage_environments, project)
             self.projects_listbox.append(item)
 
-    @Gtk.Template.Callback()
     def on_add_project_clicked(self, button):
         """Show dialog to create project."""
         dialog = Adw.AlertDialog()