Fix separator in testsplitheaders

diff --git a/tests/testsplitheaders.ui b/tests/testsplitheaders.ui
index ca68311b9ca5cc8333bd655940dea3ac84dc7f51..66bfe4e6dd05d9a85610f3dfbadd264045da007c 100644 (file)
--- a/tests/testsplitheaders.ui
+++ b/tests/testsplitheaders.ui
@@ -24,6 +24,7 @@
         <child>
           <object class="GtkSeparator">
             <property name="visible">True</property>
+            <property name="orientation">vertical</property>
           </object>
         </child>
         <child>