diff --git a/n2vc/tests/unit/utils.py b/n2vc/tests/unit/utils.py
index a727072..2f107a7 100644
--- a/n2vc/tests/unit/utils.py
+++ b/n2vc/tests/unit/utils.py
@@ -82,7 +82,18 @@
         detailed_status: str,
         vca_status: str,
         entity_type: str,
+        vca_id: str = None,
     ):
+        """
+        Write application status to database
+
+        :param: db_dict: DB dictionary
+        :param: status: Status of the application
+        :param: detailed_status: Detailed status
+        :param: vca_status: VCA status
+        :param: entity_type: Entity type ("application", "machine, and "action")
+        :param: vca_id: Id of the VCA. If None, the default VCA will be used.
+        """
         self.last_written_values = Dict(
             {
                 "n2vc_status": status,