diff --git a/debi.sh b/debi.sh
index 61bdd70..57f8eaf 100755
--- a/debi.sh
+++ b/debi.sh
@@ -509,6 +509,7 @@ EOF
 d-i partman-basicfilesystems/no_swap boolean false
 d-i partman/choose_partition select finish
 d-i partman/confirm boolean true
+d-i partman/confirm_nooverwrite boolean true
 EOF
 
 fi