diff --git a/actions/add-ldap-user-to-group b/actions/add-ldap-user-to-group
index 8c5fc2fee..448e5fd30 100755
--- a/actions/add-ldap-user-to-group
+++ b/actions/add-ldap-user-to-group
@@ -28,16 +28,16 @@ if [ -z "$results" ]; then
     # create group, with user as initial member
     cat <<EOF |ldapadd -Y EXTERNAL -H ldapi:///
 dn: cn=$groupname,ou=groups,dc=thisbox
-objectClass: groupOfUniqueNames
+objectClass: groupOfNames
 cn: $groupname
-uniqueMember: uid=$username,ou=users,dc=thisbox
+member: uid=$username,ou=users,dc=thisbox
 EOF
 else
     # add user to existing group
     cat <<EOF |ldapmodify -Y EXTERNAL -H ldapi:///
 dn: cn=$groupname,ou=groups,dc=thisbox
 changetype: modify
-add: uniqueMember
-uniqueMember: uid=$username,ou=users,dc=thisbox
+add: member
+member: uid=$username,ou=users,dc=thisbox
 EOF
 fi
diff --git a/actions/delete-ldap-user b/actions/delete-ldap-user
index b85988eae..4eb8c89cc 100755
--- a/actions/delete-ldap-user
+++ b/actions/delete-ldap-user
@@ -36,8 +36,8 @@ while read -r line; do
     cat <<EOF |ldapmodify -Y EXTERNAL -H ldapi:///
 $line
 changetype: modify
-delete: uniqueMember
-uniqueMember: uid=$username,ou=users,dc=thisbox
+delete: member
+member: uid=$username,ou=users,dc=thisbox
 EOF
 
     if [ $? -eq 65 ]; then
diff --git a/actions/get-ldap-user-groups b/actions/get-ldap-user-groups
index f9aa51556..57d8c7258 100755
--- a/actions/get-ldap-user-groups
+++ b/actions/get-ldap-user-groups
@@ -20,4 +20,4 @@
 
 username="$1"
 
-ldapsearch 2>/dev/null -Y EXTERNAL -H ldapi:/// -b 'ou=groups,dc=thisbox' -LLL "(uniqueMember=uid=$username,ou=users,dc=thisbox)" cn | awk '/cn:/ { print $2 }'
+ldapsearch 2>/dev/null -Y EXTERNAL -H ldapi:/// -b 'ou=groups,dc=thisbox' -LLL "(member=uid=$username,ou=users,dc=thisbox)" cn | awk '/cn:/ { print $2 }'
diff --git a/actions/remove-ldap-user-from-group b/actions/remove-ldap-user-from-group
index 6992bcf63..e8d5bb8c6 100755
--- a/actions/remove-ldap-user-from-group
+++ b/actions/remove-ldap-user-from-group
@@ -24,8 +24,8 @@ groupname="$2"
 cat <<EOF |ldapmodify -Y EXTERNAL -H ldapi:///
 dn: cn=$groupname,ou=groups,dc=thisbox
 changetype: modify
-delete: uniqueMember
-uniqueMember: uid=$username,ou=users,dc=thisbox
+delete: member
+member: uid=$username,ou=users,dc=thisbox
 EOF
 
 if [ $? -eq 0 ]; then
diff --git a/actions/rename-ldap-user b/actions/rename-ldap-user
index acb235dad..be01ecebd 100755
--- a/actions/rename-ldap-user
+++ b/actions/rename-ldap-user
@@ -42,14 +42,14 @@ while read -r line; do
     cat <<EOF |ldapmodify -Y EXTERNAL -H ldapi:///
 $line
 changetype: modify
-add: uniqueMember
-uniqueMember: uid=$new_username,ou=users,dc=thisbox
+add: member
+member: uid=$new_username,ou=users,dc=thisbox
 EOF
 
     cat <<EOF |ldapmodify -Y EXTERNAL -H ldapi:///
 $line
 changetype: modify
-delete: uniqueMember
-uniqueMember: uid=$old_username,ou=users,dc=thisbox
+delete: member
+member: uid=$old_username,ou=users,dc=thisbox
 EOF
 done <<< "$results"
diff --git a/plinth/modules/users/forms.py b/plinth/modules/users/forms.py
index 474670b61..5bd212158 100644
--- a/plinth/modules/users/forms.py
+++ b/plinth/modules/users/forms.py
@@ -128,7 +128,7 @@ class UserUpdateForm(forms.ModelForm):
                                               [user.get_username(), old_group])
                     except ActionError:
                         messages.error(self.request,
-                                       _('Failed to add user to group.'))
+                                       _('Failed to remove user from group.'))
             for new_group in new_groups:
                 if new_group not in old_groups:
                     try:
@@ -136,7 +136,7 @@ class UserUpdateForm(forms.ModelForm):
                                               [user.get_username(), new_group])
                     except ActionError:
                         messages.error(self.request,
-                                       _('Failed to remove user from group.'))
+                                       _('Failed to add user to group.'))
 
         return user