diff --git a/overlay/hooks/entrypoint-pre.d/20_perms_check.sh b/overlay/hooks/entrypoint-pre.d/20_perms_check.sh
index b686cde..77bb5e9 100644
--- a/overlay/hooks/entrypoint-pre.d/20_perms_check.sh
+++ b/overlay/hooks/entrypoint-pre.d/20_perms_check.sh
@@ -1,8 +1,7 @@
 #!/bin/bash
 if [ -d "/data/cache/cache" ]; then
-	echo "Running fast permissions check"
-	ls -l /data/cache/cache | tail --lines=+2 | grep -v ${WEBUSER} > /dev/null
-
+	echo "Running fast permissions check - listing files that fail permission check:"
+	su - ${WEBUSER} -c 'find /data/cache/cache -maxdepth 1 ! -readable -o ! -writable | grep . && exit 1 || exit 0'
 	if [[ $? -eq 0 || "$FORCE_PERMS_CHECK" == "true" ]]; then
 		echo "Doing full checking of permissions (This WILL take a long time on large caches)..."
 		find /data \! -user ${WEBUSER} -exec chown ${WEBUSER}:${WEBUSER} '{}' +
@@ -10,5 +9,4 @@ if [ -d "/data/cache/cache" ]; then
 	else
 		echo "Fast permissions check successful, if you have any permissions error try running with -e FORCE_PERMS_CHECK = true"
 	fi
-
 fi