diff --git a/core/src/main/java/com/google/bitcoin/params/RegTestParams.java b/core/src/main/java/com/google/bitcoin/params/RegTestParams.java
index ffc2e233..b6e90c06 100644
--- a/core/src/main/java/com/google/bitcoin/params/RegTestParams.java
+++ b/core/src/main/java/com/google/bitcoin/params/RegTestParams.java
@@ -29,10 +29,12 @@ public class RegTestParams extends TestNet2Params {
     private static final BigInteger PROOF_OF_WORK_LIMIT = new BigInteger("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16);
 
     public RegTestParams() {
+        super();
         interval = 10000;
         proofOfWorkLimit = PROOF_OF_WORK_LIMIT;
         subsidyDecreaseBlockCount = 10000;
         port = 18444;
+        acceptableAddressCodes = new int[] { 0 };
     }
 
     @Override