diff --git a/etc/labs/lab18-loopback.conf b/etc/labs/lab18-loopback.conf
index d74c9700b..585949d09 100644
--- a/etc/labs/lab18-loopback.conf
+++ b/etc/labs/lab18-loopback.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 = {
 	webrtc_loopback = {
 		type = "webrtc",
@@ -21,7 +24,7 @@ nodes = {
 		}
 
 		# A unique session identifier which must be shared between two nodes
-		session = "sessions/villas-test"
+		session = "villas-test"
 
 		# Address to the websocket signaling server
 		server = "https://villas.k8s.eonerc.rwth-aachen.de/ws/signaling"
@@ -32,7 +35,7 @@ nodes = {
 
 		# Number of seconds to wait for a WebRTC connection before proceeding the start
 		# of VILLASnode. Mainly used for testing
-		# wait_seconds = 10 # in seconds
+		wait_seconds = 10 # in seconds
 
 		# Indicates if data is allowed to be delivered out of order.
 		# The default value of false, does not make guarantees that data will be delivered in order.
@@ -42,7 +45,7 @@ nodes = {
     # If empty then configured servers in signaling server are used.
 		ice = {
 		# List of STUN/TURN servers
-		# servers = (
+		servers = (
 		)
 	  }
   }
diff --git a/etc/labs/lab18-siggen.conf b/etc/labs/lab18-siggen.conf
index 1b97cc042..897bdc4bf 100644
--- a/etc/labs/lab18-siggen.conf
+++ b/etc/labs/lab18-siggen.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 = {
 	webrtc_siggen = {
 		type = "webrtc",
@@ -42,7 +45,7 @@ nodes = {
     # If empty then configured servers in signaling server are used.
 		ice = {
 		# List of STUN/TURN servers
-		# servers = (
+		servers = (
     )
 	  }
   }