diff --git a/distro/configuration/globalproperties/globalproperties-core_demo.xml b/distro/configuration/globalproperties/globalproperties-core_demo.xml
index 6ef8f9608..0c72d2b31 100644
--- a/distro/configuration/globalproperties/globalproperties-core_demo.xml
+++ b/distro/configuration/globalproperties/globalproperties-core_demo.xml
@@ -39,6 +39,6 @@
 
     <globalProperty>
         <property>attachments.allowedFileExtensions</property>
-        <value>jpeg,jpg,png,webp</value>
+        <value>jpeg,jpg,png,pdf</value>
     </globalProperty>
 </config>