diff --git a/core/src/test/java/com/google/bitcoin/core/PeerTest.java b/core/src/test/java/com/google/bitcoin/core/PeerTest.java
index f93f73ec..b8adf9be 100644
--- a/core/src/test/java/com/google/bitcoin/core/PeerTest.java
+++ b/core/src/test/java/com/google/bitcoin/core/PeerTest.java
@@ -892,7 +892,7 @@ public class PeerTest extends TestWithNetworkConnections {
                 peerDisconnected.set(null);
             }
         });
-        final NetworkParameters params = TestNet3Params.testNet();
+        final NetworkParameters params = TestNet3Params.get();
         BitcoinSerializer serializer = new BitcoinSerializer(params);
         // Now write some bogus truncated message.
         ByteArrayOutputStream out = new ByteArrayOutputStream();