diff --git a/fuelclient/commands/graph.py b/fuelclient/commands/graph.py
index 89ee3e9f..8584f3e5 100644
--- a/fuelclient/commands/graph.py
+++ b/fuelclient/commands/graph.py
@@ -203,7 +203,7 @@ class GraphDownload(base.BaseCommand):
 
     def get_parser(self, prog_name):
         parser = super(GraphDownload, self).get_parser(prog_name)
-        tasks_level = parser.add_mutually_exclusive_group()
+        tasks_level = parser.add_mutually_exclusive_group(required=True)
         parser.add_argument('-e',
                             '--env',
                             type=int,
diff --git a/fuelclient/tests/unit/v2/cli/test_deployment_graph.py b/fuelclient/tests/unit/v2/cli/test_deployment_graph.py
index 7aabd555..ca3196cd 100644
--- a/fuelclient/tests/unit/v2/cli/test_deployment_graph.py
+++ b/fuelclient/tests/unit/v2/cli/test_deployment_graph.py
@@ -285,6 +285,13 @@ class TestGraphActions(test_engine.BaseCLITest):
             )
         )
 
+    @mock.patch('sys.stderr')
+    def test_download_fail(self, mocked_stderr):
+        cmd = 'graph download --env 1'
+        self.assertRaises(SystemExit, self.exec_command, cmd)
+        self.assertIn('-a/--all -c/--cluster -p/--plugins -r/--release',
+                      mocked_stderr.write.call_args_list[-1][0][0])
+
     def test_list(self):
         with mock.patch('sys.stdout', new=six.moves.cStringIO()) as m_stdout:
             self.m_get_client.reset_mock()