diff --git a/clone/clone b/clone/clone
index 05eb98d..83b0248 100755
--- a/clone/clone
+++ b/clone/clone
@@ -168,7 +168,7 @@ step5(){
 	echo "        - /etc/group";
 	cat ./utility/group_append | sudo tee -a /mnt/etc/group > /dev/null;
 	cat ./utility/group_append | sudo tee -a /mnt/etc/group- > /dev/null;
-	sudo cat /mnt/etc/group    | sed 's/(gpio:x:997:pi)/$1,sats/' | sudo tee /mnt/etc/group > /dev/null;
+	sudo cat /mnt/etc/group    | sed 's/^gpio:x:997:pi$/\0,sats/' | sudo tee /mnt/etc/group > /dev/null;
 
 	echo "<<< done":