diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/input.ts b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/input.ts
index bd8090122d78c..4ad4043e2fcdb 100644
--- a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/input.ts
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/input.ts
@@ -1,7 +1,7 @@
 @dec
 export default class {
-  #prop = 0;
+  prop = 0;
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 }
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/options.json b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/options.json
new file mode 100644
index 0000000000000..eb42f848066b3
--- /dev/null
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/options.json
@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "transform-legacy-decorator",
+    "transform-class-properties"
+  ]
+}
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/output.js b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/output.js
index 0c780ec95805f..f9abd3cbd3048 100644
--- a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/output.js
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties-unnamed-default-export/output.js
@@ -1,7 +1,9 @@
 let _default = class {
-  #prop = 0;
+  constructor() {
+    babelHelpers.defineProperty(this, "prop", 0);
+  }
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 };
 _default = babelHelpers.decorate([dec], _default);
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/input.ts b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/input.ts
index 2c27879776113..16f17f6ff67da 100644
--- a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/input.ts
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/input.ts
@@ -1,23 +1,23 @@
 @dec
 class C {
-  #prop = 0;
+  prop = 0;
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 }
 
 @dec
 export class D {
-  #prop = 0;
+  prop = 0;
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 }
 
 @dec
 export default class E {
-  #prop = 0;
+  prop = 0;
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 }
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/options.json b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/options.json
new file mode 100644
index 0000000000000..eb42f848066b3
--- /dev/null
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/options.json
@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "transform-legacy-decorator",
+    "transform-class-properties"
+  ]
+}
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/output.js b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/output.js
index ba8fef817aa6e..97957629f7ee3 100644
--- a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/output.js
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/with-class-private-properties/output.js
@@ -1,25 +1,31 @@
 let C = class C {
-  #prop = 0;
+  constructor() {
+    babelHelpers.defineProperty(this, "prop", 0);
+  }
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 };
 C = babelHelpers.decorate([dec], C);
 
 let D = class D {
-  #prop = 0;
+  constructor() {
+    babelHelpers.defineProperty(this, "prop", 0);
+  }
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 };
 D = babelHelpers.decorate([dec], D);
-
 export { D };
+
 let E = class E {
-  #prop = 0;
+  constructor() {
+    babelHelpers.defineProperty(this, "prop", 0);
+  }
   meth() {
-    return this.#prop;
+    return this.prop;
   }
 };
 E = babelHelpers.decorate([dec], E);
-export default E;
+export default E;
\ No newline at end of file