diff --git a/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java b/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java
index 81f24ae4e..c376051de 100644
--- a/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java
+++ b/core/src/test/java/org/bitcoinj/wallet/KeyChainGroupTest.java
@@ -249,7 +249,7 @@ public class KeyChainGroupTest {
         encryption(true);
     }
 
-    public void encryption(boolean withImported) throws Exception {
+    private void encryption(boolean withImported) {
         Utils.rollMockClock(0);
         long now = Utils.currentTimeSeconds();
         ECKey a = group.freshKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);