diff --git a/lib/mosaic-network/src/main/java/org/eclipse/mosaic/lib/coupling/ClientServerChannel.java b/lib/mosaic-network/src/main/java/org/eclipse/mosaic/lib/coupling/ClientServerChannel.java
index 47081fe09..051da003c 100644
--- a/lib/mosaic-network/src/main/java/org/eclipse/mosaic/lib/coupling/ClientServerChannel.java
+++ b/lib/mosaic-network/src/main/java/org/eclipse/mosaic/lib/coupling/ClientServerChannel.java
@@ -630,7 +630,7 @@ private ClientServerChannelProtos.RadioChannel translateChannel(AdHocChannel cha
             case SCH6:
                 return ClientServerChannelProtos.RadioChannel.PROTO_SCH6;
             default:
-                throw new RuntimeException("Channel " + channel.toString() + " does not exist in MOSAIC");
+                throw new RuntimeException("Channel " + channel + " does not exist in MOSAIC");
         }
     }