diff --git a/openstack_dashboard/dashboards/admin/volume_types/extras/forms.py b/openstack_dashboard/dashboards/admin/volume_types/extras/forms.py
index 8366eef3f7..e667efc63d 100644
--- a/openstack_dashboard/dashboards/admin/volume_types/extras/forms.py
+++ b/openstack_dashboard/dashboards/admin/volume_types/extras/forms.py
@@ -34,6 +34,20 @@ class CreateExtraSpec(forms.SelfHandlingForm):
                            error_messages=KEY_ERROR_MESSAGES)
     value = forms.CharField(max_length=255, label=_("Value"))
 
+    def clean(self):
+        data = super(CreateExtraSpec, self).clean()
+        type_id = self.initial['type_id']
+        extra_list = api.cinder.volume_type_extra_get(self.request,
+                                                      type_id)
+        for extra in extra_list:
+            if extra.key.lower() == data['key'].lower():
+                error_msg = _('Key with name "%s" already exists. Use Edit to '
+                              'update the value, else create key with '
+                              'different name.') % data['key']
+                raise forms.ValidationError(error_msg)
+
+        return data
+
     def handle(self, request, data):
         type_id = self.initial['type_id']
         try:
diff --git a/openstack_dashboard/dashboards/admin/volume_types/extras/tests.py b/openstack_dashboard/dashboards/admin/volume_types/extras/tests.py
index 1c09ba36d5..caf038bfab 100644
--- a/openstack_dashboard/dashboards/admin/volume_types/extras/tests.py
+++ b/openstack_dashboard/dashboards/admin/volume_types/extras/tests.py
@@ -54,7 +54,8 @@ class VolTypeExtrasTests(test.BaseAdminViewTests):
         self.mock_volume_type_extra_get.assert_called_once_with(
             test.IsHttpRequest(), vol_type.id)
 
-    @test.create_mocks({api.cinder: ('volume_type_extra_set', )})
+    @test.create_mocks({api.cinder: ('volume_type_extra_set',
+                                     'volume_type_extra_get')})
     def test_extra_create_post(self):
         vol_type = self.cinder_volume_types.first()
         create_url = reverse(