diff --git a/lualib-src/lua-crypt.c b/lualib-src/lua-crypt.c
index e34a939a..6f99d4f6 100644
--- a/lualib-src/lua-crypt.c
+++ b/lualib-src/lua-crypt.c
@@ -961,7 +961,7 @@ luaopen_skynet_crypt(lua_State *L) {
 	if (!init) {
 		// Don't need call srandom more than once.
 		init = 1 ;
-		srandom((time(NULL) << 16) ^ getpid());
+		srandom((random() << 8) ^ (time(NULL) << 16) ^ getpid());
 	}
 	luaL_Reg l[] = {
 		{ "hashkey", lhashkey },