diff --git a/bin/ssh-proxy b/bin/ssh-proxy
index 556eff3..ee5d0c2 100755
--- a/bin/ssh-proxy
+++ b/bin/ssh-proxy
@@ -29,7 +29,7 @@ case ${1} in
 		exit 1
 	;;
 esac
-if [ "${2}" == "" ]; then
+if [ "${2}" == "" ] || [[ "${2}" == */* ]]; then
 	showHelp
 	exit 1
 fi