diff --git a/core/api/current.txt b/core/api/current.txt
index 6d3b493d3943c..584c67f288c1e 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -31118,7 +31118,7 @@ package android.os {
     method @Deprecated public static void changeDebugPort(int);
     method public static void dumpHprofData(String) throws java.io.IOException;
     method public static boolean dumpService(String, java.io.FileDescriptor, String[]);
-    method public static void enableEmulatorTraceOutput();
+    method @Deprecated public static void enableEmulatorTraceOutput();
     method public static int getBinderDeathObjectCount();
     method public static int getBinderLocalObjectCount();
     method public static int getBinderProxyObjectCount();
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java
index b4930fa931ebf..399f11b0f2a74 100644
--- a/core/java/android/os/Debug.java
+++ b/core/java/android/os/Debug.java
@@ -1155,6 +1155,8 @@ public final class Debug
      * consequences.
      *
      * To temporarily enable tracing, use {@link #startNativeTracing()}.
+     *
+     * @deprecated Please use other tracing method in this class.
      */
     public static void enableEmulatorTraceOutput() {
         Log.w(TAG, "Unimplemented");