diff --git a/LiCSBAS_lib/LiCSBAS_tools_lib.py b/LiCSBAS_lib/LiCSBAS_tools_lib.py
index 7d7fe40..d31ea27 100644
--- a/LiCSBAS_lib/LiCSBAS_tools_lib.py
+++ b/LiCSBAS_lib/LiCSBAS_tools_lib.py
@@ -8,6 +8,8 @@
 =========
 Changelog
 =========
+v1.6.2 20201225 Yu Morishita, GSI
+ - Avoid error when remote file is empty
 v1.6.1 20201207 Yu Morishita, GSI
  - Check size and retry if error in download_data
 v1.6 20200911 Yu Morishita, GSI
@@ -67,6 +69,9 @@ def comp_size_time(file_remote, file_local):
     
     if response.status_code != 200:
         return 3
+    elif response.headers.get("Content-Length") is None:
+        ## Remote file exist but empty
+        return 3
 
     size_remote = int(response.headers.get("Content-Length"))
     size_local = os.path.getsize(file_local)