diff --git a/backup.nix b/backup.nix
index b74d6b5..73d3084 100644
--- a/backup.nix
+++ b/backup.nix
@@ -1,18 +1,11 @@
 { config, pkgs, ... }:
 
-#necessary prep work:
-# GRANT CONNECT ON DATABASE misskey TO "misskey-backup";
-# GRANT SELECT ON ALL TABLES IN SCHEMA public TO "misskey-backup";
-# GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO "misskey-backup";
-#
-# TODO: automate this cause it needs to be done whenever db schema changes
 let
   user = "misskey-backup";
   group = user;
 
   # shell script file to be sourced. must have values "MISSKEY_BACKUP_BUCKET" "MISSKEY_BACKUP_PREFIX" and "S3CFG"
-  # $S3CFG must be a path to a .s3cfg file compatible with s3cmd
-  backupConfigFile = "/etc/misskey-backup/conf";
+  backupConfigFile = "/etc/misskey-backup";
   backupScript = pkgs.writeShellApplication {
     name = "misskey-backup";
 
@@ -23,7 +16,7 @@ let
       coreutils
     ];
 
-    excludeShellChecks = [ "SC1091" ];
+    extraShellCheckFlags = [ "-x" "/etc/misskey-backup" ];
 
     text = ''
       source "${backupConfigFile}"