diff --git a/modules/services/matrix.nix b/modules/services/matrix.nix
index 42dce3f..837d20d 100644
--- a/modules/services/matrix.nix
+++ b/modules/services/matrix.nix
@@ -92,7 +92,7 @@
             enabled = true;
             uri = "ldap://172.16.10.157:389";
             start_tls = false;
-            base = "dc=crans,dc=org";
+            base = "cn=Utilisateurs,dc=crans,dc=org";
             attributes = {
               uid = "uid";
               mail = "mail";