diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 1eede14b05..c095ca81c5 100755
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -47,20 +47,6 @@ while [ -n "$1" ]; do
 	shift;
 done
 
-# just one instance
-if  ! lock -n /tmp/sysupgrade.lock
-then
-	echo "Another instance of sysupgrade already running"
-	echo "If you are sure this is wrong remove file /tmp/sysupgrade.lock"
-	exit 1
-fi
-
-# make sure the lock is removed when done even when killed
-finish() {
-	lock -u /var/sysupgrade.lock
-}
-trap finish EXIT INT TERM
-
 export CONFFILES=/tmp/sysupgrade.conffiles
 export CONF_TAR=/tmp/sysupgrade.tgz