--- a/data/gpx-viewer-file-chooser.ui
+++ b/data/gpx-viewer-file-chooser.ui
@@ -7,7 +7,6 @@
     <property name="title" translatable="yes">Choose gpx file(s)</property>
     <property name="icon_name">gpx-viewer</property>
     <property name="type_hint">normal</property>
-    <property name="has_separator">False</property>
     <property name="select_multiple">True</property>
     <property name="filter">gpx_viewer_file_chooser_filter</property>
     <property name="local_only">False</property>

--- a/data/gpx-viewer-preferences.ui
+++ b/data/gpx-viewer-preferences.ui
@@ -5,7 +5,6 @@
   <object class="GtkDialog" id="preferences_dialog">
     <property name="border_width">5</property>
     <property name="type_hint">normal</property>
-    <property name="has_separator">False</property>
     <signal name="response" handler="gpx_viewer_preferences_close"/>
     <child internal-child="vbox">
       <object class="GtkVBox" id="dialog-vbox1">