diff --git a/tcc.c b/tcc.c
index deaa4116..13da161c 100644
--- a/tcc.c
+++ b/tcc.c
@@ -4293,7 +4293,7 @@ static int macro_subst_tok(TokenString *tok_str,
                     next_nomacro();
                 }
                 tok_str_add(&str, 0);
-                sym_push2(&args, sa->v & ~SYM_FIELD, sa->type.t, (int)str.str);
+                sym_push2(&args, sa->v & ~SYM_FIELD, sa->type.t, (long)str.str);
                 sa = sa->next;
                 if (tok == ')') {
                     /* special case for gcc var args: add an empty