diff --git a/README.md b/README.md
index ba1bf6f..cd9c10e 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,12 @@ This is a small CLI tool to open a DeltaChat directory
 and export it in the format
 which can be imported by any Delta Chat client.
 
+**NOTE:** if you encounter the error
+`Fatal error: failed to load accounts config: channel closed`,
+make sure the accounts directory you specified
+isn't used by a running Delta Chat client or bot
+right now.
+
 ## Setup
 
 ```
@@ -26,6 +32,6 @@ options:
   --passphrase PASSPHRASE
                         passphrase to encrypt the backup file. environment variable: DC_BACKUP_PASSPHRASE
   -v, --verbose         print logs
-$ poetry run backup-dc-from-db-cli --account user@example.org --output ~/Desktop/backup.tar
+$ poetry run backup-dc-from-db-cli --account user@example.org --output ~/Desktop
 ```