diff --git a/modules/account/back/models/ldap-config.js b/modules/account/back/models/ldap-config.js
index 9f0e84c66..6b9d9f4dc 100644
--- a/modules/account/back/models/ldap-config.js
+++ b/modules/account/back/models/ldap-config.js
@@ -146,17 +146,22 @@ module.exports = Self => {
 
             if (!info.hasAccount) return;
 
-            reqs = [];
             for (let role of info.user.roles()) {
+                let roleName = role.inherits().name;
+
+                let dn = `cn=${roleName},${this.groupDn}`;
                 let change = new ldap.Change({
                     operation: 'add',
                     modification: {memberUid: userName}
                 });
-                let roleName = role.inherits().name;
-                let dn = `cn=${roleName},${this.groupDn}`;
-                reqs.push(client.modify(dn, change));
+
+                try {
+                    await client.modify(dn, change);
+                } catch (err) {
+                    if (err.name !== 'NoSuchObjectError')
+                        throw err;
+                }
             }
-            await Promise.all(reqs);
         },
 
         async getUsers(usersToSync) {