diff --git a/api/system-current.txt b/api/system-current.txt
index 8c222b6175c2e..355f3fe3a97fe 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -5471,7 +5471,7 @@ package android.os {
   public class UpdateEngine {
     ctor public UpdateEngine();
     method public void applyPayload(String, long, long, String[]);
-    method public void applyPayload(java.io.FileDescriptor, long, long, String[]);
+    method public void applyPayload(@NonNull java.io.FileDescriptor, long, long, @NonNull String[]);
     method public boolean bind(android.os.UpdateEngineCallback, android.os.Handler);
     method public boolean bind(android.os.UpdateEngineCallback);
     method public void cancel();
diff --git a/core/java/android/os/UpdateEngine.java b/core/java/android/os/UpdateEngine.java
index 29af17afc8721..dd5e20e39904d 100644
--- a/core/java/android/os/UpdateEngine.java
+++ b/core/java/android/os/UpdateEngine.java
@@ -16,6 +16,7 @@
 
 package android.os;
 
+import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.os.IUpdateEngine;
 import android.os.IUpdateEngineCallback;
@@ -320,8 +321,8 @@ public class UpdateEngine {
      * <p>See {@link #applyPayload(String)} for {@code offset}, {@code size} and
      * {@code headerKeyValuePairs} parameters.
      */
-    public void applyPayload(FileDescriptor fd, long offset, long size,
-            String[] headerKeyValuePairs) {
+    public void applyPayload(@NonNull FileDescriptor fd, long offset, long size,
+            @NonNull String[] headerKeyValuePairs) {
         try {
             mUpdateEngine.applyPayloadFd(fd, offset, size, headerKeyValuePairs);
         } catch (RemoteException e) {