diff --git a/scripts/upload_combined_image.lua b/scripts/upload_combined_image.lua
index 5a1a4ef..41b9d74 100644
--- a/scripts/upload_combined_image.lua
+++ b/scripts/upload_combined_image.lua
@@ -17,7 +17,7 @@ local file_to_upload = string.match(ngx.var.request_uri, ".*/(.*)")
 ngx.log(ngx.INFO, 'UPLOAD COMBINED IMAGE -> file to upload -> ', file_to_upload)
 
 local file_dir = ngx.var.tmp_file_dir
-local fullpath = file_dir .. "/" .. file_to_upload .. ".png";
+local fullpath = file_dir .. "/" .. file_to_upload
 
 ngx.log(ngx.INFO, 'UPLOAD COMBINED IMAGE -> fullpath -> ', fullpath)