diff --git a/core/java/android/os/ExternalVibration.java b/core/java/android/os/ExternalVibration.java
index 37ca868..041d21f 100644
--- a/core/java/android/os/ExternalVibration.java
+++ b/core/java/android/os/ExternalVibration.java
@@ -157,7 +157,6 @@
         out.writeInt(mUid);
         out.writeString(mPkg);
         writeAudioAttributes(mAttrs, out, flags);
-        out.writeParcelable(mAttrs, flags);
         out.writeStrongBinder(mController.asBinder());
         out.writeStrongBinder(mToken);
     }
diff --git a/core/tests/coretests/src/android/os/ExternalVibrationTest.java b/core/tests/coretests/src/android/os/ExternalVibrationTest.java
new file mode 100644
index 0000000..3b872d5
--- /dev/null
+++ b/core/tests/coretests/src/android/os/ExternalVibrationTest.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package android.os;
+
+import static junit.framework.Assert.assertEquals;
+
+import static org.mockito.Mockito.mock;
+
+import android.media.AudioAttributes;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.junit.MockitoJUnitRunner;
+
+@RunWith(MockitoJUnitRunner.class)
+public class ExternalVibrationTest {
+    @Test
+    public void testSerialization() {
+        AudioAttributes audio = new AudioAttributes.Builder().build();
+        IExternalVibrationController controller = mock(IExternalVibrationController.class);
+        ExternalVibration original = new ExternalVibration(
+                123, // uid
+                "pkg",
+                audio,
+                controller);
+        Parcel p = Parcel.obtain();
+        original.writeToParcel(p, 0);
+        p.setDataPosition(0);
+        ExternalVibration restored = ExternalVibration.CREATOR.createFromParcel(p);
+        assertEquals(original, restored);
+    }
+}
+