diff --git a/tests/test_internal_controller.py b/tests/test_internal_controller.py
index ce9037f3d9263b59b4f21af3b07090feadf2627b..6189a3b4133c34ae48aeac02dbbdea19173440fe 100644
--- a/tests/test_internal_controller.py
+++ b/tests/test_internal_controller.py
@@ -41,7 +41,7 @@ class TestInternalController(BaseTestCase):
             data=json.dumps(body),
             content_type="application/json",
         )
-        self.assert200(response, "Response body is : " + response.data.decode("utf-8"))
+        self.assert204(response, "Response body is : " + response.data.decode("utf-8"))
 
     def test_clock_info(self):
         """Test case for clock_info
@@ -110,7 +110,7 @@ class TestInternalController(BaseTestCase):
             data=json.dumps(body),
             content_type="application/json",
         )
-        self.assert200(response, "Response body is : " + response.data.decode("utf-8"))
+        self.assert204(response, "Response body is : " + response.data.decode("utf-8"))
 
     def test_set_active_source(self):
         """Test case for set_active_source
@@ -120,7 +120,7 @@ class TestInternalController(BaseTestCase):
         response = self.client.open(
             "/api/v1/source/active/{number}".format(number=2), method="PUT"
         )
-        self.assert200(response, "Response body is : " + response.data.decode("utf-8"))
+        self.assert204(response, "Response body is : " + response.data.decode("utf-8"))
 
     def test_set_clock_info(self):
         """Test case for set_clock_info
@@ -132,7 +132,7 @@ class TestInternalController(BaseTestCase):
         response = self.client.open(
             "/api/v1/clock", method="PUT", data=json.dumps(body), content_type="application/json"
         )
-        self.assert200(response, "Response body is : " + response.data.decode("utf-8"))
+        self.assert204(response, "Response body is : " + response.data.decode("utf-8"))
 
 
 if __name__ == "__main__":