diff --git a/lang/ast/for.c b/lang/ast/for.c
index c5507d5..10499e2 100644
--- a/lang/ast/for.c
+++ b/lang/ast/for.c
@@ -69,6 +69,7 @@ static struct token_parse_result parse_in(
 	/* set the sub-expression depth to be non-zero so the expression parser doesn't consume the expression separator. */
 	expr->s_subexpr_depth = 1;
 	expr_add_terminator(expr, IVY_KW_DO);
+	expr_add_terminator(expr, IVY_SYM_RIGHT_PAREN);
 
 	state->s_prev_token = IVY_KW_IN;
 	return PARSE_RESULT(IVY_OK, 0);