diff --git a/core/java/src/net/i2p/crypto/eddsa/math/Constants.java b/core/java/src/net/i2p/crypto/eddsa/math/Constants.java
index 885bee57f..3b67f240c 100644
--- a/core/java/src/net/i2p/crypto/eddsa/math/Constants.java
+++ b/core/java/src/net/i2p/crypto/eddsa/math/Constants.java
@@ -2,7 +2,7 @@ package net.i2p.crypto.eddsa.math;
 
 import net.i2p.crypto.eddsa.Utils;
 
-public class Constants {
+final class Constants {
     public static final byte[] ZERO = Utils.hexToBytes("0000000000000000000000000000000000000000000000000000000000000000");
     public static final byte[] ONE = Utils.hexToBytes("0100000000000000000000000000000000000000000000000000000000000000");
     public static final byte[] TWO = Utils.hexToBytes("0200000000000000000000000000000000000000000000000000000000000000");