diff --git a/src/unix/fs.c b/src/unix/fs.c
index 1b8d2ad1..7cb5ef33 100644
--- a/src/unix/fs.c
+++ b/src/unix/fs.c
@@ -1110,9 +1110,10 @@ static ssize_t uv__fs_copyfile(uv_fs_t* req) {
   int dst_flags;
   int result;
   int err;
-  size_t bytes_to_send;
-  int64_t in_offset;
-  ssize_t bytes_written;
+  off_t bytes_to_send;
+  off_t in_offset;
+  off_t bytes_written;
+  size_t bytes_chunk;
 
   dstfd = -1;
   err = 0;
@@ -1211,7 +1212,10 @@ static ssize_t uv__fs_copyfile(uv_fs_t* req) {
   bytes_to_send = src_statsbuf.st_size;
   in_offset = 0;
   while (bytes_to_send != 0) {
-    uv_fs_sendfile(NULL, &fs_req, dstfd, srcfd, in_offset, bytes_to_send, NULL);
+    bytes_chunk = SSIZE_MAX;
+    if (bytes_to_send < (off_t) bytes_chunk)
+      bytes_chunk = bytes_to_send;
+    uv_fs_sendfile(NULL, &fs_req, dstfd, srcfd, in_offset, bytes_chunk, NULL);
     bytes_written = fs_req.result;
     uv_fs_req_cleanup(&fs_req);