diff --git a/vncviewer/parameters.cxx b/vncviewer/parameters.cxx
index d386bd4..6c2af38 100644
--- a/vncviewer/parameters.cxx
+++ b/vncviewer/parameters.cxx
@@ -102,6 +102,9 @@
                             "connect (if possible)", "");
 StringParameter geometry("geometry",
 			 "Specify size and position of viewer window", "");
+
+BoolParameter listenMode("listen", "Listen for connections from VNC servers", false);
+
 BoolParameter remoteResize("RemoteResize",
                            "Dynamically resize the remote desktop size as "
                            "the size of the local client window changes. "