diff --git a/fractal-gtk/res/ui/msg_src_window.ui b/fractal-gtk/res/ui/msg_src_window.ui
index f38c229c..820d356f 100644
--- a/fractal-gtk/res/ui/msg_src_window.ui
+++ b/fractal-gtk/res/ui/msg_src_window.ui
@@ -36,7 +36,6 @@
           </object>
           <packing>
             <property name="pack_type">end</property>
-            <property name="position">1</property>
           </packing>
         </child>
       </object>