diff --git a/data/gui/input_dialog.ui b/data/gui/input_dialog.ui
index f57779407..1e475eb2b 100644
--- a/data/gui/input_dialog.ui
+++ b/data/gui/input_dialog.ui
@@ -7,6 +7,7 @@
     <property name="type_hint">dialog</property>
     <property name="has_separator">False</property>
     <signal name="destroy" handler="on_input_dialog_destroy"/>
+    <signal name="delete_event" handler="on_input_dialog_delete_event"/>
     <child internal-child="vbox">
       <object class="GtkVBox" id="dialog-vbox10">
         <property name="visible">True</property>