diff --git a/ets2panda/checker/ets/typeCheckingHelpers.cpp b/ets2panda/checker/ets/typeCheckingHelpers.cpp
index 79205c2b9ef4908b5a65a8a3d9a6fa979590d993..238e29964c885549ec4945d278564f4c20374105 100644
--- a/ets2panda/checker/ets/typeCheckingHelpers.cpp
+++ b/ets2panda/checker/ets/typeCheckingHelpers.cpp
@@ -556,7 +556,8 @@ void ETSChecker::IterateInVariableContext(varbinder::Variable *const var)
             }
 
             ES2PANDA_ASSERT(classDef->TsType());
-            if (!containingClass->IsTypeError()) {
+            // Note: find the classType of the nearest classScope and then set it as the containingClass.
+            if (!containingClass->IsTypeError() && Context().ContainingClass() == nullptr) {
                 Context().SetContainingClass(containingClass->AsETSObjectType());
             }
         }
diff --git a/ets2panda/test/runtime/ets/namespaceClassPropertyAssignTest.ets b/ets2panda/test/runtime/ets/namespaceClassPropertyAssignTest.ets
new file mode 100644
index 0000000000000000000000000000000000000000..1b4aec9afde61661c79519dee5c6f67787928f0c
--- /dev/null
+++ b/ets2panda/test/runtime/ets/namespaceClassPropertyAssignTest.ets
@@ -0,0 +1,32 @@
+/*
+ * 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.
+ */
+
+namespace ns {
+  export interface A {
+    a: int;
+    f: () => void;
+  }
+
+  export class AC implements A {
+    a: int = 100;
+    f: () => void = (): void => {
+      this.a = 200
+    }
+  }
+}
+
+let ac: ns.AC = new ns.AC();
+ac.f();
+arktest.assertEQ(ac.a, 200)