diff --git a/api/current.txt b/api/current.txt
index 1a01431619d50..41dccda0fc809 100755
--- a/api/current.txt
+++ b/api/current.txt
@@ -27723,7 +27723,7 @@ package android.net {
     method public abstract boolean isRelative();
     method public android.net.Uri normalizeScheme();
     method public static android.net.Uri parse(String);
-    method public String toSafeString();
+    method @NonNull public String toSafeString();
     method public abstract String toString();
     method public static android.net.Uri withAppendedPath(android.net.Uri, String);
     method public static void writeToParcel(android.os.Parcel, android.net.Uri);
diff --git a/core/java/android/net/Uri.java b/core/java/android/net/Uri.java
index 28b2707bc02d2..9125cfbc7f9cc 100644
--- a/core/java/android/net/Uri.java
+++ b/core/java/android/net/Uri.java
@@ -16,6 +16,7 @@
 
 package android.net;
 
+import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.UnsupportedAppUsage;
 import android.content.Intent;
@@ -380,6 +381,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
      * returned as {@code http://example.com/...}.
      * @return the common forms PII redacted string of this URI
      */
+    @NonNull
     public String toSafeString() {
         String scheme = getScheme();
         String ssp = getSchemeSpecificPart();