diff --git a/service_objects/celery_services.py b/service_objects/celery_services.py
index 0b44374..3795c7f 100644
--- a/service_objects/celery_services.py
+++ b/service_objects/celery_services.py
@@ -20,7 +20,7 @@ def _deflate_model(value):
         Transforms model instances into picklable tuple.
         """
         if isinstance(value, models.Model):
-            return (value.__class__, value.pk)
+            return value.__class__, value.pk
         return value
 
     @staticmethod
diff --git a/tests/test_celery_services.py b/tests/test_celery_services.py
index 4bc1fc3..c7c14eb 100644
--- a/tests/test_celery_services.py
+++ b/tests/test_celery_services.py
@@ -30,11 +30,11 @@ def test_cleaned_data_pickling(self):
         service.is_valid()
 
         # Check deflated ModelField format
-        defalted_models = self.initial_data.copy()
-        defalted_models["foo"] = (CustomFooModel, self.foo.pk)
+        deflated_models = self.initial_data.copy()
+        deflated_models["foo"] = (CustomFooModel, self.foo.pk)
 
         self.assertEqual(
-            CeleryService._deflate_models(service.cleaned_data), defalted_models
+            CeleryService._deflate_models(service.cleaned_data), deflated_models
         )
 
         # Check deflate/inflate invariant