From 7282176a9ca7ea60a76f2b59ec2d44bf66a98589 Mon Sep 17 00:00:00 2001
From: Francesco Cozzuto <francesco.cozzuto@gmail.com>
Date: Sun, 9 Nov 2025 12:58:17 +0100
Subject: [PATCH] Progress

---
 src/file_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/file_tree.c b/src/file_tree.c
index febe682..aafccb4 100644
--- a/src/file_tree.c
+++ b/src/file_tree.c
@@ -339,7 +339,7 @@ int file_tree_write(FileTree *ft, string path,
     File *f = &e->f;
 
     uint64_t first_chunk_index = off / f->chunk_size;
-    uint64_t  last_chunk_index = (off + len - 1) / f->chunk_size;
+    uint64_t  last_chunk_index = first_chunk_index + (len - 1) / f->chunk_size;
 
     if (last_chunk_index >= f->num_chunks) {
         uint64_t old_num_chunks = f->num_chunks;