diff --git a/packages/sysutils/busybox/profile.d/safe-shutdown.conf b/packages/sysutils/busybox/profile.d/safe-shutdown.conf
index dfe7dd7ddf..71214d9187 100644
--- a/packages/sysutils/busybox/profile.d/safe-shutdown.conf
+++ b/packages/sysutils/busybox/profile.d/safe-shutdown.conf
@@ -24,7 +24,7 @@
 ################################################################################
 
   add_omit_pids() {
-    omit_pids+=( $@ )
+    omit_pids="$omit_pids -o $1"
   }
 
   _shutdown_script () {
@@ -41,11 +41,11 @@
     _shutdown_script
     add_omit_pids $(pidof connmand)
     add_omit_pids $(pidof dbus-daemon)
-    killall5 -15 ${omit_pids[@]/#/-o }
+    killall5 -15 $omit_pids
     for seq in `seq 1 10` ; do
       usleep 500000
       clear > /dev/tty1
-      killall5 -18 ${omit_pids[@]/#/-o } || break
+      killall5 -18 $omit_pids || break
     done
     sync
     umount -a >/dev/null 2>&1