diff --git a/congressclient/common/utils.py b/congressclient/common/utils.py
index d5b9d23..9a381e8 100644
--- a/congressclient/common/utils.py
+++ b/congressclient/common/utils.py
@@ -71,6 +71,15 @@ def format_long_dict_list(data):
     return ',\n'.join(newdata) + '\n'
 
 
+def format_dict(data):
+    """Return a formatted string.
+
+    :param data: a dict
+    :rtype: a string formatted to {a:b, c:d}
+    """
+    return str({str(key): str(value) for key, value in data.items()})
+
+
 def format_list(data):
     """Return a formatted strings
 
diff --git a/congressclient/osc/v1/datasource.py b/congressclient/osc/v1/datasource.py
index 1f3d6ab..c79f933 100644
--- a/congressclient/osc/v1/datasource.py
+++ b/congressclient/osc/v1/datasource.py
@@ -38,7 +38,7 @@ class ListDatasources(lister.Lister):
         client = self.app.client_manager.congressclient
         data = client.list_datasources()['results']
         columns = ['id', 'name', 'enabled', 'type', 'config']
-        formatters = {'Datasources': utils.format_list}
+        formatters = {'config': utils.format_dict}
         return (columns,
                 (utils.get_dict_properties(s, columns,
                                            formatters=formatters)
diff --git a/congressclient/tests/v1/test_datasource.py b/congressclient/tests/v1/test_datasource.py
index b0790ea..0908a9f 100644
--- a/congressclient/tests/v1/test_datasource.py
+++ b/congressclient/tests/v1/test_datasource.py
@@ -43,6 +43,37 @@ class TestListDatasources(common.TestCongressBase):
         self.assertEqual(['id', 'name', 'enabled', 'type', 'config'],
                          result[0])
 
+    def test_list_datasource_output_not_unicode(self):
+        # response json string is converted to dict by oslo jsonutils.loads(),
+        # so the key and value in the dict should be unicode type.
+        response = {
+            u"results": [{u"id": u"neutron",
+                          u"name": u"my_name",
+                          u"enabled": True,
+                          u"type": None,
+                          u"config": {
+                              u'username': u'admin',
+                              u'tenant_name': u'admin',
+                              u'poll_time': u'10',
+                              u'password': u'<hidden>',
+                              u'auth_url': u'http://127.0.0.1:5000/v2.0'
+                          }}]
+        }
+        lister = mock.Mock(return_value=response)
+        self.app.client_manager.congressclient.list_datasources = lister
+        cmd = datasource.ListDatasources(self.app, self.namespace)
+
+        parsed_args = self.check_parser(cmd, [], [])
+        result = cmd.take_action(parsed_args)
+
+        lister.assert_called_with()
+        self.assertEqual(['id', 'name', 'enabled', 'type', 'config'],
+                         result[0])
+        # get 'config' column
+        config = list(result[1])[0][-1]
+        self.assertIn("'username': 'admin'", config)
+        self.assertNotIn("u'username': u'admin'", config)
+
 
 class TestListDatasourceTables(common.TestCongressBase):
     def test_list_datasource_tables(self):