diff --git a/cssh b/cssh
index 222c625..8473359 100755
--- a/cssh
+++ b/cssh
@@ -23,13 +23,14 @@ eval "$vars"
 [ "${#hosts[*]}" -gt 0 ] || die "Vous devez spécifier l'hôte sur lequel se connecter"
 
 [ ${#args[*]} -gt 0 ] && cmd="$(qvals "${args[@]}"); " || cmd=
-cmd="$cmd$(<"$scriptdir/Sscreen")"
+cmd="$cmd
+export LOCKPRG=/bin/true; $(<"$scriptdir/Sscreen")"
 cmd="'${cmd//\'/\'\\\'\'}'"
 
 for host in "${hosts[@]}"; do
     "$ssh" \
         "${options[@]}" -qt "$host" -- \
-        "[ -x /usr/local/nutools/Sscreen ] && exec /usr/local/nutools/Sscreen $(qvals "${args[@]}") || exit 123"
+        "export LOCKPRG=/bin/true; [ -x /usr/local/nutools/Sscreen ] && exec /usr/local/nutools/Sscreen $(qvals "${args[@]}") || exit 123"
     if [ $? -eq 123 ]; then
         # pas de Sscreen en face, le faire à la main
         ${exec:+exec} \