diff --git a/core/java/android/companion/virtual/IVirtualDeviceActivityListener.aidl b/core/java/android/companion/virtual/IVirtualDeviceActivityListener.aidl
index 53af4c5da761d..a46dc534da562 100644
--- a/core/java/android/companion/virtual/IVirtualDeviceActivityListener.aidl
+++ b/core/java/android/companion/virtual/IVirtualDeviceActivityListener.aidl
@@ -23,7 +23,7 @@ import android.content.ComponentName;
  *
  * @hide
  */
-interface IVirtualDeviceActivityListener {
+oneway interface IVirtualDeviceActivityListener {
 
     /**
      * Called when the top activity is changed.