diff --git a/ets2panda/checker/ETSAnalyzer.cpp b/ets2panda/checker/ETSAnalyzer.cpp
index e889e393d757b7c78bc43da78c0bbf9ff6d13fad..c8f4edd38ec8e48648fc0f493f3790ae6aac4045 100644
--- a/ets2panda/checker/ETSAnalyzer.cpp
+++ b/ets2panda/checker/ETSAnalyzer.cpp
@@ -1939,15 +1939,11 @@ void ETSAnalyzer::CheckObjectExprProps(const ir::ObjectExpression *expr, checker
         ir::Expression *key = propExpr->AsProperty()->Key();
         ir::Expression *value = propExpr->AsProperty()->Value();
 
-        util::StringView pname;
-        if (key->IsStringLiteral()) {
-            pname = key->AsStringLiteral()->Str();
-        } else if (key->IsIdentifier()) {
-            pname = key->AsIdentifier()->Name();
-        } else {
+        if (!key->IsIdentifier()) {
             checker->LogError(diagnostic::CLASS_COMPOSITE_INVALID_KEY, {}, expr->Start());
             return;
         }
+        util::StringView pname = key->AsIdentifier()->Name();
         varbinder::LocalVariable *lv = objType->GetProperty(pname, searchFlags);
         if (lv == nullptr) {
             checker->LogError(diagnostic::UNDEFINED_PROPERTY, {objType->Name(), pname}, propExpr->Start());
diff --git a/ets2panda/test/ast/compiler/ets/MultiPropertyWithSameName.ets b/ets2panda/test/ast/compiler/ets/MultiPropertyWithSameName.ets
index 3c7d4737be6c08d653a939fd752b78946e9ababd..1b0436727a2bdd1a57f7e7ceb04ce72a243211bc 100644
--- a/ets2panda/test/ast/compiler/ets/MultiPropertyWithSameName.ets
+++ b/ets2panda/test/ast/compiler/ets/MultiPropertyWithSameName.ets
@@ -33,8 +33,6 @@ let c: A = {
     "field": '3',
 }
 
-
-/* @@? 22:5 Error TypeError: An object literal cannot have multiple properties with the same name.  */
-/* @@? 27:5 Error TypeError: An object literal cannot have multiple properties with the same name.  */
-/* @@? 28:5 Error TypeError: An object literal cannot have multiple properties with the same name.  */
-/* @@? 33:5 Error TypeError: An object literal cannot have multiple properties with the same name.  */
+/* @@? 20:12 Error TypeError: key in class composite should be identifier. */
+/* @@? 25:12 Error TypeError: key in class composite should be identifier. */
+/* @@? 31:12 Error TypeError: key in class composite should be identifier. */
diff --git a/ets2panda/test/ast/compiler/ets/objectLiteralBadKey.ets b/ets2panda/test/ast/compiler/ets/objectLiteralBadKey.ets
index d93a7dccdde10b944e31c4816265bfb36fe6dd55..0a68e69ccd1ab814781eaab11e5030e299070a4f 100644
--- a/ets2panda/test/ast/compiler/ets/objectLiteralBadKey.ets
+++ b/ets2panda/test/ast/compiler/ets/objectLiteralBadKey.ets
@@ -20,4 +20,4 @@ let c: C = /* @@ label */{
     33: 44,
 };
 
-/* @@@ label Error TypeError: key in class composite should be either identifier or string literal  */
+/* @@@ label Error TypeError: key in class composite should be identifier. */
diff --git a/ets2panda/test/ast/compiler/ets/objectLiteral_stringliteral_as_identifier.ets b/ets2panda/test/ast/compiler/ets/objectLiteral_stringliteral_as_identifier.ets
new file mode 100644
index 0000000000000000000000000000000000000000..38e6b680643f037bc6cd8f77f97e4d97aa8250c0
--- /dev/null
+++ b/ets2panda/test/ast/compiler/ets/objectLiteral_stringliteral_as_identifier.ets
@@ -0,0 +1,43 @@
+/*
+ * 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 C {
+    field: string = "abc";
+}
+
+interface I {
+    field: string;
+}
+
+function main() {
+    let c1: C = { field: "pass" };
+    let c2: C = /* @@ label1 */{ "field": "CTE" };
+
+    let i1: I = { field: "pass" };
+    let i2: I = /* @@ label2 */{ "field": "CTE" };
+
+    let r1: Record<string, string> = { "field": "pass" };
+
+    testClass(/* @@ label3 */{ "field": "CTE" })
+    testInterface(/* @@ label4 */{ "field": "CTE" })
+}
+
+function testClass(c: C) { }
+function testInterface(i: I) { }
+
+/* @@@ label1 Error TypeError: key in class composite should be identifier. */
+/* @@@ label2 Error TypeError: key in class composite should be identifier. */
+/* @@@ label3 Error TypeError: key in class composite should be identifier. */
+/* @@@ label4 Error TypeError: key in class composite should be identifier. */
diff --git a/ets2panda/test/runtime/ets/objectLiteral-2.ets b/ets2panda/test/runtime/ets/objectLiteral-2.ets
index a537fb3627e3c61d805da261579a5da6118c7737..7a48565205f197facaa473599008162cc109d694 100644
--- a/ets2panda/test/runtime/ets/objectLiteral-2.ets
+++ b/ets2panda/test/runtime/ets/objectLiteral-2.ets
@@ -39,7 +39,7 @@ function test(c: C = {}, x: int = 0, ivv: int = 0) {
 }
 
 function main(): int {
-    let c: C = {"x": 7, iv: {v: 8}}; // variable definition
+    let c: C = {x: 7, iv: {v: 8}}; // variable definition
     test(c, 7, 8)
 
     test() // optional parameter
diff --git a/ets2panda/test/runtime/ets/objectLiteral.ets b/ets2panda/test/runtime/ets/objectLiteral.ets
index 66c40e4e22851a87c17a8a69a97e569d85cf31a8..19154ee67bef2d420347650d871e713657034316 100644
--- a/ets2panda/test/runtime/ets/objectLiteral.ets
+++ b/ets2panda/test/runtime/ets/objectLiteral.ets
@@ -41,7 +41,7 @@ function test(c: C, f: int, x: int, s: String, ivv: int) {
 
 function main(): int {
     let c: C = { // variable definition
-        "x": 7,
+        x: 7,
         s: "sss",
     };
     test(c, 0, 7, "sss", 0)
diff --git a/ets2panda/test/runtime/ets/objectLiteralInterfaceType.ets b/ets2panda/test/runtime/ets/objectLiteralInterfaceType.ets
index 2bcc70dd0c43053b73f2479c14c153fdfdff88d5..32437b9661275be6d15460e2463d1f6437ecd68d 100644
--- a/ets2panda/test/runtime/ets/objectLiteralInterfaceType.ets
+++ b/ets2panda/test/runtime/ets/objectLiteralInterfaceType.ets
@@ -47,7 +47,7 @@ function test(i: I = {f: -1, x: -2, s: "default", iv: {v: -3}},
 function main(): int {
     let i: I = { // variable definition
         f : 1,
-        "x": 2,
+        x: 2,
         s: "s1",
         iv: { v: 3}
     };
diff --git a/ets2panda/util/diagnostic/semantic.yaml b/ets2panda/util/diagnostic/semantic.yaml
index 302489098a9dc43b3dc23b6cded42765acf6cdd2..3ea11f3781954e5c34b3320656236bd6caf61146 100644
--- a/ets2panda/util/diagnostic/semantic.yaml
+++ b/ets2panda/util/diagnostic/semantic.yaml
@@ -302,7 +302,7 @@ semantic:
 
 - name: CLASS_COMPOSITE_INVALID_KEY
   id: 73
-  message: "key in class composite should be either identifier or string literal"
+  message: "key in class composite should be identifier."
 
 - name: OBJECT_LITERAL_METHOD_KEY
   id: 74