diff --git a/backup.nix b/backup.nix
index af71197..26e6d8a 100644
--- a/backup.nix
+++ b/backup.nix
@@ -42,8 +42,8 @@ in {
 
     script = ''
       ageRecipient="age17ckyc69njpryytc63ynn545jswyucg28k5xg3043g3j6q38dxqwq0wzhm2"
-      bucket="$(grep 'bucket=' < "${backupConfigFile}" | sed 's/bucket \?= \?')"
-      prefix="$(grep 'prefix=' < "${backupConfigFile}" | sed 's/prefix \?= \?')"
+      bucket="$(grep 'bucket=' < "${backupConfigFile}" | sed 's/bucket \?= \?//g')"
+      prefix="$(grep 'prefix=' < "${backupConfigFile}" | sed 's/prefix \?= \?//g')"
 
       s3Dir="s3://$bucket/$prefix""misskey-$(date +'%d-%m-%YT%H.%M.%S')"
       echo "Uploading backups to '$s3Dir'"