1 files changed, 5 insertions, 1 deletions

diff --git a/sftp-client.c b/sftp-client.c
index cb4e0c4b1..e3c630837 100644
--- a/sftp-client.c
+++ b/sftp-client.c
@@ -1104,7 +1104,11 @@ do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
                             local_path, strerror(errno));
                         goto fail;
                 }
-                if (st.st_size > size) {
+                if (st.st_size < 0) {
+                        error("\"%s\" has negative size", local_path);
+                        goto fail;
+                }
+                if ((u_int64_t)st.st_size > size) {
                         error("Unable to resume download of \"%s\": "
                             "local file is larger than remote", local_path);
  fail: