diff --git a/modules.d/99squash/clear-squash.sh b/modules.d/99squash/clear-squash.sh
index 34cb4cf5..1d626f98 100755
--- a/modules.d/99squash/clear-squash.sh
+++ b/modules.d/99squash/clear-squash.sh
@@ -1,9 +1,6 @@
-#!/bin/sh
+#!/bin/bash
 SQUASH_MNT_REC=/squash/mounts
-SQUASH_MNTS=( )
 
-while read mnt; do
-    SQUASH_MNTS+=( "$mnt" )
-done <<< "$(cat $SQUASH_MNT_REC)"
+mapfile -t SQUASH_MNTS < $SQUASH_MNT_REC
 
-umount --lazy -- ${SQUASH_MNTS[@]}
+umount --lazy -- "${SQUASH_MNTS[@]}"