diff --git a/src/main.rs b/src/main.rs
index 23d375f..548a5ec 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 use std::{
+    cmp::{max, min},
     io::{stdout, Write},
     path::{Path, PathBuf},
     sync::Arc,
@@ -392,10 +393,12 @@ async fn multipart_upload(
 
     let upload_id = multipart_upload_res.upload_id().unwrap().to_string();
 
-    let mut chunk_count = file_size / CHUNK_SIZE as u64;
-    let mut size_of_last_chunk = file_size % CHUNK_SIZE as u64;
+    let chunk_size = max(CHUNK_SIZE as u64, file_size / 10000);
+
+    let mut chunk_count = file_size / chunk_size;
+    let mut size_of_last_chunk = file_size % chunk_size;
     if size_of_last_chunk == 0 {
-        size_of_last_chunk = CHUNK_SIZE as u64;
+        size_of_last_chunk = chunk_size;
         chunk_count -= 1;
     }