diff --git a/actions/check-ldap-user-exists b/actions/check-ldap-user-exists
new file mode 100755
index 000000000..f747a4de2
--- /dev/null
+++ b/actions/check-ldap-user-exists
@@ -0,0 +1,27 @@
+#!/bin/bash
+#
+# This file is part of Plinth.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+username="$1"
+
+results=$(ldapsearch -x -D 'cn=admin,dc=thisbox' -w $(sudo cat /var/lib/plinth/ldap-admin) -b 'ou=users,dc=thisbox' -LLL "(uid=$username)" uid)
+
+if [ -z "$results" ]; then
+    echo "User does not exist"
+else
+    echo "User exists"
+fi
diff --git a/plinth/modules/users/templates/users_update.html b/plinth/modules/users/templates/users_update.html
index bf04b4e69..b1d0a0b2b 100644
--- a/plinth/modules/users/templates/users_update.html
+++ b/plinth/modules/users/templates/users_update.html
@@ -52,6 +52,10 @@
         </p>
         {% endif %}
 
+        {% if is_ldap_user %}
+          <p>This user is also an LDAP user.</p>
+        {% endif %}
+
         <input type="submit" class="btn btn-primary" value="Save Changes"/>
 
       </form>
diff --git a/plinth/modules/users/views.py b/plinth/modules/users/views.py
index 05d6a4f3d..edb8360c1 100644
--- a/plinth/modules/users/views.py
+++ b/plinth/modules/users/views.py
@@ -90,6 +90,8 @@ class UserUpdate(ContextMixin, SuccessMessageMixin, UpdateView):
         context = super(UserUpdate, self).get_context_data(**kwargs)
         output = actions.run('check-user-exists', [self.object.username])
         context['is_posix_user'] = 'User exists' in output
+        output = actions.run('check-ldap-user-exists', [self.object.username])
+        context['is_ldap_user'] = 'User exists' in output
         return context
 
     def get_success_url(self):