diff --git a/plugins/zfs/zpool_iostat b/plugins/zfs/zpool_iostat
index a59321c3..d3096897 100755
--- a/plugins/zfs/zpool_iostat
+++ b/plugins/zfs/zpool_iostat
@@ -82,12 +82,12 @@ get_pool_fieldname() {
 }
 
 if [ "$ACTION" = "config" ]; then
-        echo 'graph_title zpool iostat'
-        echo 'graph_args --base 1000 -l 0'
-        echo 'graph_vlabel write - read KBytes/s'
-        echo 'graph_category disk'
-        echo 'graph_scale no'
-        echo 'graph_info This graph shows zpool iostat'
+	echo 'graph_title zpool iostat'
+	echo 'graph_args --base 1000 -l 0'
+	echo 'graph_vlabel write - read KBytes/s'
+	echo 'graph_category disk'
+	echo 'graph_scale no'
+	echo 'graph_info This graph shows zpool iostat'
 	# assemble the "graph_order" as a sorted list of read/write pairs for each poll
 	printf "graph_order"
 	echo "$zlist" | while read -r pool_id; do
@@ -105,8 +105,8 @@ if [ "$ACTION" = "config" ]; then
 		echo "${fieldname}_write.label $pool_id"
 		echo "${fieldname}_write.type GAUGE"
 		echo "${fieldname}_write.negative ${fieldname}_read"
-        done
-        exit 0
+	done
+	exit 0
 fi
 echo "$zlist" | while read -r pool_id; do
 	fieldname="$(get_pool_fieldname "pool_$pool_id")"