diff --git a/core/src/main/java/org/bitcoinj/core/TransactionOutput.java b/core/src/main/java/org/bitcoinj/core/TransactionOutput.java
index 7a7a15b6..7b1bf616 100644
--- a/core/src/main/java/org/bitcoinj/core/TransactionOutput.java
+++ b/core/src/main/java/org/bitcoinj/core/TransactionOutput.java
@@ -24,7 +24,8 @@ import org.slf4j.*;
 
 import javax.annotation.*;
 import java.io.*;
-import java.util.*;
+import java.util.Arrays;
+import java.util.List;
 
 import static com.google.common.base.Preconditions.*;
 
@@ -411,7 +412,7 @@ public class TransactionOutput extends ChildMessage {
 
     /** Returns a copy of the output detached from its containing transaction, if need be. */
     public TransactionOutput duplicateDetached() {
-        return new TransactionOutput(params, null, Coin.valueOf(value), org.spongycastle.util.Arrays.clone(scriptBytes));
+        return new TransactionOutput(params, null, Coin.valueOf(value), Arrays.copyOf(scriptBytes, scriptBytes.length));
     }
 
     @Override
diff --git a/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java b/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java
index 8fd3dab3..20abe30b 100644
--- a/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java
+++ b/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java
@@ -27,9 +27,9 @@ import com.google.common.collect.ImmutableList;
 import org.junit.Before;
 import org.junit.Test;
 import org.spongycastle.crypto.params.KeyParameter;
-import org.spongycastle.util.Arrays;
 
 import java.math.BigInteger;
+import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicReference;