diff --git a/syncano/exceptions.py b/syncano/exceptions.py
index bcd3f2a..1e2e7d8 100644
--- a/syncano/exceptions.py
+++ b/syncano/exceptions.py
@@ -75,3 +75,7 @@ class SyncanoDoesNotExist(SyncanoException):
 
 class RevisionMismatchException(SyncanoRequestError):
     """Revision do not match with expected one"""
+
+
+class UserNotFound(SyncanoRequestError):
+    """Special error to handle user not found case."""
diff --git a/syncano/models/accounts.py b/syncano/models/accounts.py
index 8623c49..7737f48 100644
--- a/syncano/models/accounts.py
+++ b/syncano/models/accounts.py
@@ -1,4 +1,4 @@
-from syncano.exceptions import SyncanoValueError
+from syncano.exceptions import SyncanoRequestError, SyncanoValueError, UserNotFound
 
 from . import fields
 from .base import Model
@@ -214,7 +214,14 @@ def _group_users_method(self, user_id=None, method='GET'):
         if user_id is not None:
             endpoint += '{}/'.format(user_id)
         connection = self._get_connection()
-        return connection.request(method, endpoint)
+        try:
+            response = connection.request(method, endpoint)
+        except SyncanoRequestError as e:
+            if e.status_code == 404:
+                raise UserNotFound(e.status_code, 'User not found.')
+            raise
+
+        return response
 
     def list_users(self):
         return self._group_users_method()
diff --git a/tests/integration_test_user_profile.py b/tests/integration_test_user.py
similarity index 76%
rename from tests/integration_test_user_profile.py
rename to tests/integration_test_user.py
index 37a8def..457ee0e 100644
--- a/tests/integration_test_user_profile.py
+++ b/tests/integration_test_user.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+from syncano.exceptions import UserNotFound
 from syncano.models import User
 from tests.integration_test import InstanceMixin, IntegrationTest
 
@@ -39,3 +40,18 @@ def test_profile_change_schema(self):
         self.user.profile.save()
         user = User.please.get(id=self.user.id)
         self.assertEqual(user.profile.profile_pic, self.SAMPLE_PROFILE_PIC)
+
+
+class UserTest(InstanceMixin, IntegrationTest):
+
+    @classmethod
+    def setUpClass(cls):
+        super(UserTest, cls).setUpClass()
+
+        cls.group = cls.instance.groups.create(
+            label='testgroup'
+        )
+
+    def test_if_custom_error_is_raised_on_user_group(self):
+        with self.assertRaises(UserNotFound):
+            self.group.user_details(user_id=221)