diff --git a/src/http/ngx_http_script.h b/src/http/ngx_http_script.h
index 4a74512..658faaa 100644
--- a/src/http/ngx_http_script.h
+++ b/src/http/ngx_http_script.h
@@ -8,10 +8,18 @@
 #define _NGX_HTTP_SCRIPT_H_INCLUDED_
 
 
-typedef struct {
-    handler;
-    offset / data;
-    size;
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+typedef u_char *(*ngx_http_script_code_pt) (ngx_http_request_t *r,
+                                            u_char *buf, void *data);
+
+typedef struct ngx_http_script_code_s {
+    size_t                   data_len;
+    size_t                   code_len;
+    ngx_http_script_code_pt  code;
 } ngx_http_script_code_t;