diff --git a/novnc/Dockerfile b/novnc/Dockerfile
index 78371b4..ecd061f 100644
--- a/novnc/Dockerfile
+++ b/novnc/Dockerfile
@@ -30,7 +30,7 @@ fi
 # Read ssh client variables hostname and port (5900, 5901, 5902, etc)
 if ssh ${MYVNC_VNCCLIENT_HOST} exit
 then
-    ssh ${MYVNC_VNCCLIENT_HOST} -L ${MYVNC_VNCSERVER_PORT:-5900}:localhost:${MYVNC_VNCCLIENT_PORT} &
+    ssh ${MYVNC_VNCCLIENT_HOST} -L ${MYVNC_VNCLISTEN_HOST:-5900}:localhost:${MYVNC_VNCCLIENT_PORT} &
 else
     echo "Unable to establish SSH tunnel."
     echo "Exiting..."