diff --git a/README.md b/README.md
index fae01e5..e5f4308 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,8 @@ More infos:     see constants and README.md
 
 - add a log-file for the rsync errors
 
+- check user-input for validity
+
 # Dependencies
 - rsync (because Backuppy makes its backups with rsync)