diff --git a/ets2panda/ir/expressions/memberExpression.cpp b/ets2panda/ir/expressions/memberExpression.cpp
index a0b9b4bc75618998fdd1a2e4458ec2d6796d4965..e65917414723fcabbe37783c1cbf3675617f9424 100644
--- a/ets2panda/ir/expressions/memberExpression.cpp
+++ b/ets2panda/ir/expressions/memberExpression.cpp
@@ -227,7 +227,12 @@ checker::Type *MemberExpression::TraverseUnionMember(checker::ETSChecker *checke
         ES2PANDA_ASSERT(apparent != nullptr);
         if (apparent->IsETSObjectType()) {
             SetObjectType(apparent->AsETSObjectType());
-            addPropType(ResolveObjectMember(checker).first);
+            auto *memberType = ResolveObjectMember(checker).first;
+            if (memberType != nullptr && memberType->IsTypeError()) {
+                return checker->GlobalTypeError();
+            }
+
+            addPropType(memberType);
         } else {
             checker->LogError(diagnostic::UNION_MEMBER_ILLEGAL_TYPE, {unionType}, Start());
         }
diff --git a/ets2panda/test/ast/compiler/ets/union_method_6.ets b/ets2panda/test/ast/compiler/ets/union_method_6.ets
new file mode 100644
index 0000000000000000000000000000000000000000..7efcf9dae74656ff500e05127f946d4527555754
--- /dev/null
+++ b/ets2panda/test/ast/compiler/ets/union_method_6.ets
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+class A {
+    foo(v: string) { console.log("A:" + v) }
+}
+
+class C {
+    foo)v: string) { console.log("C:" + v) }
+}
+
+function test1(v: A|C) {
+    v.foo("123")
+}
+
+/* @@? 21:8 Error SyntaxError: Unexpected token ')'. */
+/* @@? 21:8 Error SyntaxError: Field type annotation expected. */
+/* @@? 21:18 Error SyntaxError: Unexpected token ')'. */
+/* @@? 21:20 Error SyntaxError: Unexpected token '{'. */
+/* @@? 21:29 Error SyntaxError: Field type annotation expected. */
+/* @@? 21:29 Error SyntaxError: Unexpected token '.'. */
+/* @@? 21:33 Error TypeError: Only abstract or native methods can't have body. */
+/* @@? 21:34 Error SyntaxError: Unexpected token, expected ',' or ')'. */
+/* @@? 21:34 Error SyntaxError: Unexpected token 'C:'. */
+/* @@? 21:34 Error SyntaxError: Parameter declaration should have an explicit type annotation. */
+/* @@? 21:34 Error SyntaxError: Unexpected token, expected an identifier. */
+/* @@? 21:39 Error SyntaxError: Unexpected token '+'. */
+/* @@? 21:41 Error TypeError: Variable 'v' has already been declared. */
+/* @@? 21:41 Error TypeError: Property 'v' must be accessed through 'this' */
+/* @@? 21:42 Error SyntaxError: Field type annotation expected. */
+/* @@? 21:42 Error SyntaxError: Unexpected token ')'. */
+/* @@? 22:1 Error SyntaxError: Unexpected token '}'. */