diff --git a/src/gui/gcal-window.ui b/src/gui/gcal-window.ui
index 8f745c86..91bc7c17 100644
--- a/src/gui/gcal-window.ui
+++ b/src/gui/gcal-window.ui
@@ -115,6 +115,7 @@
                         <property name="icon-name">open-menu-symbolic</property>
                         <property name="popover">win_menu</property>
                         <property name="tooltip-text" translatable="yes">Main Menu</property>
+                        <property name="primary">True</property>
                       </object>
                     </child>
                   </object>