diff --git a/script/scanRear.sh b/script/scanRear.sh
index 85eb9bf..b4094c0 100755
--- a/script/scanRear.sh
+++ b/script/scanRear.sh
@@ -22,7 +22,7 @@ output_file="${filename_base}%04d.pnm"
 
 cd "/tmp/${date}" || exit
 
-pkill -P "$(cat scan_pid)"
+kill -9 "$(cat scan_pid)"
 rm scan_pid
 
 #sthg is wrong with device name, probably escaping, use default printer: