diff --git a/src/lib/tcp/tcp_messages.mes b/src/lib/tcp/tcp_messages.mes
index 6b6c77e534..40dd700252 100644
--- a/src/lib/tcp/tcp_messages.mes
+++ b/src/lib/tcp/tcp_messages.mes
@@ -34,6 +34,10 @@ error that should be submitted as a bug.
 This debug message is issued when the server's connection filter rejects
 a new connection based on the client's ip address.
 
+% TCP_CONNECTION_REJECTED_BY_FILTER connection from %1 has been denied by the connection filter.
+This debug message is issued when the server's connection filter rejects
+a new connection based on the client's ip address.
+
 % TCP_CONNECTION_SHUTDOWN shutting down TCP connection from %1
 This debug message is issued when one of the TCP connections is shut down.
 The connection can be stopped as a result of an error or after the