diff --git a/quickjs.c b/quickjs.c
index ac4f2aa..42c8d4e 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -25660,6 +25660,8 @@ static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags)
         BOOL has_optional_chain = FALSE;
 
         if (s->token.val == TOK_QUESTION_MARK_DOT) {
+            if ((parse_flags & PF_POSTFIX_CALL) == 0)
+                return js_parse_error(s, "new keyword cannot be used with an optional chain");
             op_token_ptr = s->token.ptr;
             /* optional chaining */
             if (next_token(s))
diff --git a/test262_errors.txt b/test262_errors.txt
index 6cac22d..7e086f6 100644
--- a/test262_errors.txt
+++ b/test262_errors.txt
@@ -30,7 +30,6 @@ test262/test/staging/sm/class/boundFunctionSubclassing.js:12: Test262Error: Expe
 test262/test/staging/sm/class/compPropNames.js:26: Error: Expected syntax error: ({[1, 2]: 3})
 test262/test/staging/sm/class/strictExecution.js:32: Error: Assertion failed: expected exception TypeError, no exception thrown
 test262/test/staging/sm/class/superPropOrdering.js:83: Error: Assertion failed: expected exception TypeError, no exception thrown
-test262/test/staging/sm/expressions/optional-chain.js:25: Error: Assertion failed: expected exception SyntaxError, no exception thrown
 test262/test/staging/sm/expressions/short-circuit-compound-assignment-const.js:97: TypeError: 'a' is read-only
 test262/test/staging/sm/expressions/short-circuit-compound-assignment-tdz.js:23: Error: Assertion failed: expected exception ReferenceError, got TypeError: 'a' is read-only
 test262/test/staging/sm/extensions/TypedArray-set-object-funky-length-detaches.js:55: RangeError: invalid array length