diff --git a/sros2/test/sros2/commands/security/verbs/fixtures/client_service_node.py b/sros2/test/sros2/commands/security/verbs/fixtures/client_service_node.py
index c2e85418..2efcda3b 100644
--- a/sros2/test/sros2/commands/security/verbs/fixtures/client_service_node.py
+++ b/sros2/test/sros2/commands/security/verbs/fixtures/client_service_node.py
@@ -34,9 +34,9 @@ def destroy_node(self):
         super().destroy_node()
 
 
-def main(args=None):
+def main():
     try:
-        with rclpy.init(args=args):
+        with rclpy.init():
             node = ClientServiceNode()
             rclpy.spin(node)
     except (KeyboardInterrupt, ExternalShutdownException):
diff --git a/sros2/test/sros2/commands/security/verbs/fixtures/pub_sub_node.py b/sros2/test/sros2/commands/security/verbs/fixtures/pub_sub_node.py
index 14bc94e7..09c2c33d 100644
--- a/sros2/test/sros2/commands/security/verbs/fixtures/pub_sub_node.py
+++ b/sros2/test/sros2/commands/security/verbs/fixtures/pub_sub_node.py
@@ -37,9 +37,9 @@ def destroy_node(self):
         super().destroy_node()
 
 
-def main(args=None):
+def main():
     try:
-        with rclpy.init(args=args):
+        with rclpy.init():
             node = PubSubNode()
             rclpy.spin(node)
     except (KeyboardInterrupt, ExternalShutdownException):