diff --git a/conf/dialplan/default.xml b/conf/dialplan/default.xml
index 73825931a3..2280a041f3 100644
--- a/conf/dialplan/default.xml
+++ b/conf/dialplan/default.xml
@@ -35,6 +35,14 @@
       </condition>
     </extension>
 
+    <!-- Set the domain -->
+    <extension name="set_domain_openzap" continue="true">
+      <condition field="${domain_name}" expression="^$"/>
+      <condition field="source" expression="mod_openzap">
+	<action application="set" data="domain_name=$${domain}"/>
+      </condition>
+    </extension>
+
     <!-- Example of doing things based on time of day. -->
     <extension name="tod_example" continue="true">
       <!-- man strftime - M-F, 9AM to 6PM -->