diff --git a/plugin/business/pangu-http/src/pangu_http.cpp b/plugin/business/pangu-http/src/pangu_http.cpp
index b20321f..ca7f85f 100644
--- a/plugin/business/pangu-http/src/pangu_http.cpp
+++ b/plugin/business/pangu-http/src/pangu_http.cpp
@@ -1919,7 +1919,7 @@ enum pangu_action http_scan(const struct tfe_http_session * session, enum tfe_ht
 		int str_url_length = (int) (strlen(session->req->req_spec.url));
 
 		scan_ret = Maat_full_scan_string(g_pangu_rt->maat, g_pangu_rt->scan_table_id[PXY_CTRL_HTTP_URL],
-			CHARSET_UTF8, str_url, str_url_length, result, NULL, MAX_SCAN_RESULT, &(ctx->scan_mid), ctx->thread_id);
+			CHARSET_UTF8, str_url, str_url_length, result + hit_cnt, NULL, MAX_SCAN_RESULT - hit_cnt, &(ctx->scan_mid), ctx->thread_id);
 
 		if (scan_ret > 0)
 		{