diff --git a/etc/labs/lab19.conf b/etc/labs/lab19.conf
index 6f9f5c5bf..47a3862cb 100644
--- a/etc/labs/lab19.conf
+++ b/etc/labs/lab19.conf
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2014-2024 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 nodes = {
     udp_node = {
         type = "socket"
@@ -37,7 +40,6 @@ paths = (
         out = "udp_node"
     },
     {
-	in = "udp_node"
+        in = "udp_node"
     }
-
 )