diff --git a/src/servers/protocol/kcp.rs b/src/servers/protocol/kcp.rs
index c5d3028..4272a20 100644
--- a/src/servers/protocol/kcp.rs
+++ b/src/servers/protocol/kcp.rs
@@ -89,7 +89,9 @@ async fn process(
 
                     debug!("Bytes read: {:?} write: {:?}", bytes_tx, bytes_rx);
                 }
-                _ => {}
+                _ => {
+                    error!("Reached unknown protocol: {:?}", custom.protocol);
+                }
             }
         }
     };
diff --git a/src/servers/protocol/tcp.rs b/src/servers/protocol/tcp.rs
index 99465bd..64c04f1 100644
--- a/src/servers/protocol/tcp.rs
+++ b/src/servers/protocol/tcp.rs
@@ -108,7 +108,9 @@ async fn process(
 
                     debug!("Bytes read: {:?} write: {:?}", bytes_tx, bytes_rx);
                 }
-                _ => {}
+                _ => {
+                    error!("Reached unknown protocol: {:?}", custom.protocol);
+                }
             }
         }
     };