diff --git a/pica-mail-mta/Dockerfile b/pica-mail-mta/Dockerfile
index 9ea7563d7dac2bae827fb061ba120ae6153aa1c2..ca93e256c082356535a66590d77516fa1ee8d6dc 100644
--- a/pica-mail-mta/Dockerfile
+++ b/pica-mail-mta/Dockerfile
@@ -16,7 +16,7 @@ ENV RELAY_DOMAINS picasoft.net
 #serveur LDAP
 ENV LDAP_SERVER ldap.test.picasoft.net
 #postfix: search_base pour l'existence d'adresses @picasoft.net
-ENV LDAP_POSTFIX_SEARCH_BASE dc=picasoft, dc=net
+ENV LDAP_POSTFIX_SEARCH_BASE dc=picasoft,dc=net
 
 #installation de postfix
 RUN apt-get update -y \