diff --git a/src/libs/lua/src/lstate.c b/src/libs/lua/src/lstate.c
index c1a76643..7778a827 100644
--- a/src/libs/lua/src/lstate.c
+++ b/src/libs/lua/src/lstate.c
@@ -236,6 +236,7 @@ static void preinit_thread (lua_State *L, global_State *g) {
   L->nny = 1;
   L->status = LUA_OK;
   L->errfunc = 0;
+  L->oldpc = 0;
 }