diff --git a/src/ldo.c b/src/ldo.c

index d1bf786..48037a0 100644

--- a/src/ldo.c

+++ b/src/ldo.c

@@ -274,7 +274,7 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {

     CallInfo *ci;

     StkId st, base;

     Proto *p = cl->p;

-    luaD_checkstack(L, p->maxstacksize);

+    luaD_checkstack(L, p->maxstacksize + p->numparams);

     func = restorestack(L, funcr);

     if (!p->is_vararg) {  /* no varargs? */

       base = func + 1;