diff --git a/framework-t/src/android/net/NetworkTemplate.java b/framework-t/src/android/net/NetworkTemplate.java
index cad8075..dba3991 100644
--- a/framework-t/src/android/net/NetworkTemplate.java
+++ b/framework-t/src/android/net/NetworkTemplate.java
@@ -652,7 +652,9 @@
      *
      * @hide
      */
-    public boolean matches(NetworkIdentity ident) {
+    @SystemApi(client = MODULE_LIBRARIES)
+    public boolean matches(@NonNull NetworkIdentity ident) {
+        Objects.requireNonNull(ident);
         if (!matchesMetered(ident)) return false;
         if (!matchesRoaming(ident)) return false;
         if (!matchesDefaultNetwork(ident)) return false;