diff --git a/uncloud/uncloud_api/models.py b/uncloud/uncloud_api/models.py
index 50857fb..fdbcda8 100644
--- a/uncloud/uncloud_api/models.py
+++ b/uncloud/uncloud_api/models.py
@@ -55,7 +55,7 @@ class Product(models.Model):
     recurring_price = models.FloatField()
     one_time_price = models.FloatField()
 
-
+    # FIXME: need recurring_time_frame
 
     class Meta:
         abstract = True
diff --git a/uncloud/uncloud_vm/tests.py b/uncloud/uncloud_vm/tests.py
deleted file mode 100644
index 7ce503c..0000000
--- a/uncloud/uncloud_vm/tests.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from django.test import TestCase
-
-# Create your tests here.