diff --git a/scripts/combine.lua b/scripts/combine.lua
index 231da59..5f6bb22 100644
--- a/scripts/combine.lua
+++ b/scripts/combine.lua
@@ -35,9 +35,8 @@ if image_origin == "WX" then
 elseif image_origin == "LOCAL" then
     ngx.log(ngx.INFO, "IMAGE ORIGIN -> ", image_origin)
 else
-    ngx.status = 400
-    ngx.log(ngx.ERR, "COMBINE REQUEST PAYLOAD IMAGES ORIGIN NOT FOUND.")
-    return
+    image_origin = "LOCAL"
+    ngx.log(ngx.INFO, "IMAGE ORIGIN default to LOCAL")
 end
 
 -- Judge payload images para length