diff --git a/core/java/android/net/NetworkRequest.java b/core/java/android/net/NetworkRequest.java
index 83bdfaa..5a09b46 100644
--- a/core/java/android/net/NetworkRequest.java
+++ b/core/java/android/net/NetworkRequest.java
@@ -52,6 +52,9 @@
      * @hide
      */
     public NetworkRequest(NetworkCapabilities nc, int legacyType, int rId) {
+        if (nc == null) {
+            throw new NullPointerException();
+        }
         requestId = rId;
         networkCapabilities = nc;
         this.legacyType = legacyType;