diff --git a/qa/workunits/fs/misc/acl.sh b/qa/workunits/fs/misc/acl.sh
index 8f1c921182b..4186cf91ad6 100755
--- a/qa/workunits/fs/misc/acl.sh
+++ b/qa/workunits/fs/misc/acl.sh
@@ -12,15 +12,17 @@ if test $? != 0; then
 fi
 
 set -e
-for (( i=0; i<100; i++))
+c=0
+while [ $c -lt 100  ]
 do
+	c=`expr $c + 1`
 	# inherited ACL from parent directory's default ACL
 	mkdir d1
 	c1=`getfacl d1 | grep -c "nobody:rw"`
 	sudo echo 3 > /proc/sys/vm/drop_caches
 	c2=`getfacl d1 | grep -c "nobody:rw"`
 	rmdir d1
-	if [[ $c1 -ne 2 || $c2 -ne 2 ]]
+	if [ $c1 -ne 2 ] || [ $c2 -ne 2 ]
 	then
 		echo "ERROR: incorrect ACLs"
 		exit 1