diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90219b238..44b4e1158 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - [#172](https://github.com/HewlettPackard/oneview-ansible/issues/172) Allow credentials to be defined inside the playbooks
 - [#282](https://github.com/HewlettPackard/oneview-ansible/issues/282) Updating a Server Profile causes Server Hardware reboots for operations which do not require it
 - [#285](https://github.com/HewlettPackard/oneview-ansible/issues/285) Modules cannot unassign a Server Hardware or create SP with unassigned SH
+- [#288](https://github.com/HewlettPackard/oneview-ansible/issues/288) Adding osCustomAttributes to a SP which had none before results in failure
 
 # v4.0.0
 #### Notes
diff --git a/library/oneview_server_profile.py b/library/oneview_server_profile.py
index ea297c958..9d2ce1bdd 100644
--- a/library/oneview_server_profile.py
+++ b/library/oneview_server_profile.py
@@ -321,6 +321,7 @@ def __present(self, data, resource):
             self.__validations_for_os_custom_attributes(data, merged_data, resource)
 
             if not ResourceComparator.compare(resource, merged_data):
+
                 resource = self.__update_server_profile(merged_data, resource)
                 changed = True
                 msg = self.MSG_UPDATED
@@ -332,10 +333,12 @@ def __present(self, data, resource):
     # Removes .mac entries from resource os_custom_attributes if no .mac passed into data params.
     # Swaps True values for 'true' string, and False values for 'false' string to avoid common user errors.
     def __validations_for_os_custom_attributes(self, data, merged_data, resource):
-        if data.get('osDeploymentSettings') is None:
-            return False
-        elif data.get('osDeploymentSettings').get('osCustomAttributes') is None:
-            return False
+        if data.get('osDeploymentSettings') is None or resource.get('osDeploymentSettings') is None:
+            return
+        elif data.get('osDeploymentSettings', {}).get('osCustomAttributes') is None:
+            return
+        elif resource.get('osDeploymentSettings', {}).get('osCustomAttributes') is None:
+            return
         attributes_merged = merged_data.get('osDeploymentSettings', {}).get('osCustomAttributes', None)
         attributes_resource = resource.get('osDeploymentSettings', {}).get('osCustomAttributes', None)
         dp_uri = resource.get('osDeploymentSettings', {}).get('osDeploymentPlanUri', None)
diff --git a/test/test_oneview_server_profile.py b/test/test_oneview_server_profile.py
index 99dc9bb5b..ea8b40347 100644
--- a/test/test_oneview_server_profile.py
+++ b/test/test_oneview_server_profile.py
@@ -1904,6 +1904,38 @@ def test_should_unassign_server_hardware(self):
             ansible_facts=mock_facts
         )
 
+    def test_validating_os_custom_attr_should_return_if_no_attributes_found_on_resource(self):
+        sp_get_value = deepcopy(CREATED_BASIC_PROFILE)
+        sp_get_value['osDeploymentSettings'] = {}
+        sp_exit_value = deepcopy(CREATED_BASIC_PROFILE)
+        sp_exit_value.update(deepcopy(PARAMS_FOR_UPDATE['data']))
+
+        self.mock_ov_client.server_profiles.get_by_name.return_value = sp_get_value
+        self.mock_ov_client.server_profiles.update.return_value = deepcopy(CREATED_BASIC_PROFILE)
+        self.mock_ansible_module.params = deepcopy(PARAMS_FOR_UPDATE)
+
+        ServerProfileModule().run()
+
+        self.mock_ov_client.server_profiles.update.assert_called_once_with(sp_exit_value, sp_exit_value['uri'])
+
+    def test_validating_os_custom_attr_should_return_if_no_attributes_found_on_data(self):
+        sp_get_value = deepcopy(CREATED_BASIC_PROFILE)
+        sp_get_value['osDeploymentSettings'] = {}
+        sp_exit_value = deepcopy(CREATED_BASIC_PROFILE)
+        sp_exit_value.update(deepcopy(PARAMS_FOR_UPDATE['data']))
+        sp_exit_value['osDeploymentSettings']['osCustomAttributes'] = None
+
+        params_for_update = deepcopy(PARAMS_FOR_UPDATE)
+        params_for_update['data']['osDeploymentSettings']['osCustomAttributes'] = None
+
+        self.mock_ov_client.server_profiles.get_by_name.return_value = sp_get_value
+        self.mock_ov_client.server_profiles.update.return_value = deepcopy(CREATED_BASIC_PROFILE)
+        self.mock_ansible_module.params = params_for_update
+
+        ServerProfileModule().run()
+
+        self.mock_ov_client.server_profiles.update.assert_called_once_with(sp_exit_value, sp_exit_value['uri'])
+
 
 if __name__ == '__main__':
     unittest.main()