diff --git a/htdocs/lib/ldap.lib.php b/htdocs/lib/ldap.lib.php
index 64b30fdb516..db453756702 100644
--- a/htdocs/lib/ldap.lib.php
+++ b/htdocs/lib/ldap.lib.php
@@ -56,7 +56,7 @@ function dolibarr_ldap_bind($ds)
 {
   if (defined("LDAP_ADMIN_PASS") && LDAP_SUFFIX_DN && LDAP_ADMIN_DN && LDAP_ADMIN_PASS)
     {
-      $ldapbind = ldap_bind($ds, LDAP_ADMIN_DN.LDAP_SUFFIX_DN, LDAP_ADMIN_PASS);
+      $ldapbind = ldap_bind($ds, LDAP_ADMIN_DN.",".LDAP_SUFFIX_DN, LDAP_ADMIN_PASS);
     }
 
   return $ldapbind;