diff --git a/lgsm/functions/command_stop.sh b/lgsm/functions/command_stop.sh
index 8bca6779c..d21efc855 100644
--- a/lgsm/functions/command_stop.sh
+++ b/lgsm/functions/command_stop.sh
@@ -180,6 +180,7 @@ fn_stop_ark(){
                                 rev | cut -d\/ -f1)
                         #
                         # check for a valid pid
+                        pig=${pid//[!0-9]/}
                         let pid+=0 # turns an empty string into a valid number, '0',
                         # and a valid numeric pid remains unchanged.
                         if [[ $pid -gt 1 && $pid -le $(cat /proc/sys/kernel/pid_max) ]] ; then