diff --git a/tabellio/agenda/profiles/default/types/tabellio.agenda.folder.xml b/tabellio/agenda/profiles/default/types/tabellio.agenda.folder.xml
index 209ca5c..da3c1fe 100644
--- a/tabellio/agenda/profiles/default/types/tabellio.agenda.folder.xml
+++ b/tabellio/agenda/profiles/default/types/tabellio.agenda.folder.xml
@@ -8,8 +8,13 @@
  <property name="content_icon">folder_icon.gif</property>
  <property name="allow_discussion">False</property>
  <property name="global_allow">True</property>
- <property name="filter_content_types">False</property>
- <property name="allowed_content_types" />
+ <property name="filter_content_types">True</property>
+ <property name="allowed_content_types">
+   <element value="tabellio.agenda.comevent"/>
+   <element value="tabellio.agenda.event"/>
+   <element value="tabellio.agenda.folder"/>
+   <element value="tabellio.agenda.parlevent"/>
+ </property>
 
  <!-- schema interface -->
  <property name="schema">tabellio.agenda.folder.IAgendaFolder</property>