diff --git a/app/itim/tests/unit/service/test_unit_service_serializer.py b/app/itim/tests/unit/service/test_unit_service_serializer.py
index b98cfc73..3fdb1c5f 100644
--- a/app/itim/tests/unit/service/test_unit_service_serializer.py
+++ b/app/itim/tests/unit/service/test_unit_service_serializer.py
@@ -170,7 +170,7 @@ class ServiceSerializerTestCases(
             action = 'create',
         )
 
-        kwargs = model_kwargs
+        kwargs = model_kwargs.copy()
         kwargs['is_template'] = True
         ports = kwargs['port']
         del kwargs['port']
@@ -215,7 +215,7 @@ class ServiceSerializerTestCases(
             action = 'create',
         )
 
-        kwargs = model_kwargs
+        kwargs = model_kwargs.copy()
         kwargs['is_template'] = True
         del kwargs['port']
 
@@ -255,7 +255,7 @@ class ServiceSerializerTestCases(
             action = 'create',
         )
 
-        kwargs = model_kwargs
+        kwargs = model_kwargs.copy()
         kwargs['is_template'] = True
         del kwargs['port']
         del kwargs['device']
@@ -333,7 +333,7 @@ class ServiceSerializerTestCases(
             action = 'create',
         )
 
-        kwargs = kwargs_cluster
+        kwargs = kwargs_cluster.copy()
         nodes = kwargs['nodes']
         del kwargs['nodes']
         cluster = model_cluster.objects.create( **kwargs )
@@ -379,7 +379,7 @@ class ServiceSerializerTestCases(
             action = 'create',
         )
 
-        kwargs = model_kwargs
+        kwargs = model_kwargs.copy()
         del kwargs['port']
         root_service = model.objects.create ( **kwargs )
         root_service.dependent_service.add( created_model )