diff --git a/Parser/parsetok.c b/Parser/parsetok.c
index d8c8f62257cc..71792dd4694a 100644
--- a/Parser/parsetok.c
+++ b/Parser/parsetok.c
@@ -213,7 +213,9 @@ parsetok(struct tok_state *tok, grammar *g, int start, perrdetail *err_ret,
 	else
 		n = NULL;
 
+#ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD
 	*flags = ps->p_flags;
+#endif
 	PyParser_Delete(ps);
 
 	if (n == NULL) {