diff --git a/seed/reverse-proxy-client/dictionaries/21_revprox_client.xml b/seed/reverse-proxy-client/dictionaries/21_revprox_client.xml
index b5c918c..e378abe 100644
--- a/seed/reverse-proxy-client/dictionaries/21_revprox_client.xml
+++ b/seed/reverse-proxy-client/dictionaries/21_revprox_client.xml
@@ -20,7 +20,7 @@
         </variable>
         <variable name="revprox_client_max_body_size" description="Taille maximum du corps" supplier="ReverseProxy:max_body_size"/>
         <variable name="revprox_client_local_location" type="filename" hidden='True'/>
-        <variable name="revprox_client_web_address" type="web_address" hidden='True' supplier="ReverseProxy:url"/>
+        <variable name="revprox_client_web_address" type="web_address" hidden='True' supplier="ReverseProxy:url" mandatory="True"/>
         <variable name="revprox_http" type="boolean" hidden='True' supplier="ReverseProxy:http">
           <value>False</value>
         </variable>
@@ -43,10 +43,10 @@
       <target>revprox_client_server_ip</target>
     </fill>
     <fill name="calc_web_address">
-      <param type="variable">domain_name_eth0</param>
-      <param type="variable">revprox_client_port</param>
-      <param type="variable">revprox_client_local_location</param>
-      <param type="variable">revprox_client_http</param>
+      <param type="variable" name="domain_name" optional="True">domain_name_eth0</param>
+      <param type="variable" name="port">revprox_client_port</param>
+      <param type="variable" name="local_location">revprox_client_local_location</param>
+      <param type="variable" name="http">revprox_client_http</param>
       <target>revprox_client_web_address</target>
     </fill>
   </constraints>
diff --git a/seed/reverse-proxy-client/funcs/revprox_client.py b/seed/reverse-proxy-client/funcs/revprox_client.py
index a06e548..d7ef8c7 100644
--- a/seed/reverse-proxy-client/funcs/revprox_client.py
+++ b/seed/reverse-proxy-client/funcs/revprox_client.py
@@ -1,7 +1,7 @@
-def calc_web_address(domain_name: str,
-                     port: str,
-                     local_location: str,
-                     http: bool,
+def calc_web_address(domain_name: str=None,
+                     port: str=None,
+                     local_location: str=None,
+                     http: bool=None,
                      ) -> str:
     if not domain_name or not port:
         return