diff --git a/src/http/ngx_http_script.c b/src/http/ngx_http_script.c
index 1918397..2169c87 100644
--- a/src/http/ngx_http_script.c
+++ b/src/http/ngx_http_script.c
@@ -792,6 +792,10 @@
 
     } else {
         e->buf.len = e->pos - e->buf.data;
+
+        if (!code->add_args) {
+            r->args.len = 0;
+        }
     }
 
     if (e->log) {