diff --git a/scripts/form_upload_to_compress.lua b/scripts/form_upload_to_compress.lua
index c3c9fc4..c354ef7 100644
--- a/scripts/form_upload_to_compress.lua
+++ b/scripts/form_upload_to_compress.lua
@@ -95,7 +95,7 @@ local function read_form_file()
                 ngx.log(ngx.INFO, 'COMPRESS FILE -> ', files[i])
 
                 -- Compress image
-                incoming = file_dir .. "/" .. files[i]
+                local incoming = file_dir .. "/" .. files[i]
                 output_file[i] = file_dir .. "/" .. uuid() .. ".jpg"
 
                 ngx.log(ngx.INFO, 'INPUT FILE -> ', incoming)