diff --git a/api/system-current.txt b/api/system-current.txt
index a1bb3c821b5ab136013d02985e5a23b2e7a17c3c..0adbe85f4771c187e71330dbd30e2738e656b8b4 100755
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -5052,6 +5052,10 @@ package android.net {
     field public final android.net.RssiCurve rssiCurve;
   }
 
+  public abstract class SocketKeepalive implements java.lang.AutoCloseable {
+    field public static final int SUCCESS = 0; // 0x0
+  }
+
   public final class StaticIpConfiguration implements android.os.Parcelable {
     ctor public StaticIpConfiguration();
     ctor public StaticIpConfiguration(@Nullable android.net.StaticIpConfiguration);
diff --git a/core/java/android/net/SocketKeepalive.java b/core/java/android/net/SocketKeepalive.java
index fb224fbe13187addf4d5b53d12ee01a34b44705d..fc9a8f63c1311f4244f544e580dbace43195c04d 100644
--- a/core/java/android/net/SocketKeepalive.java
+++ b/core/java/android/net/SocketKeepalive.java
@@ -20,6 +20,7 @@ import android.annotation.IntDef;
 import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.SystemApi;
 import android.os.Binder;
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
@@ -53,7 +54,11 @@ import java.util.concurrent.Executor;
 public abstract class SocketKeepalive implements AutoCloseable {
     static final String TAG = "SocketKeepalive";
 
-    /** @hide */
+    /**
+     * No errors.
+     * @hide
+     */
+    @SystemApi
     public static final int SUCCESS = 0;
 
     /** @hide */