diff --git a/graphenej/src/main/java/de/bitsharesmunich/graphenej/BrainKey.java b/graphenej/src/main/java/de/bitsharesmunich/graphenej/BrainKey.java
index 39710c4..860559c 100644
--- a/graphenej/src/main/java/de/bitsharesmunich/graphenej/BrainKey.java
+++ b/graphenej/src/main/java/de/bitsharesmunich/graphenej/BrainKey.java
@@ -1,6 +1,5 @@
 package de.bitsharesmunich.graphenej;
 
-import de.bitsharesmunich.graphenej.crypto.SecureRandomGenerator;
 import org.bitcoinj.core.DumpedPrivateKey;
 import org.bitcoinj.core.ECKey;
 import org.bitcoinj.core.NetworkParameters;
@@ -11,6 +10,8 @@ import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
 import java.util.ArrayList;
 
+import de.bitsharesmunich.graphenej.crypto.SecureRandomGenerator;
+
 /**
  * Class used to encapsulate all BrainKey-related operations.
  */
@@ -22,6 +23,9 @@ public class BrainKey {
     /* The required number of words */
     public static final int BRAINKEY_WORD_COUNT = 12;
 
+    /* The default sequence number is zero */
+    public static final int DEFAULT_SEQUENCE_NUMBER = 0;
+
     /* The corresponding private key derivated from the brain key */
     private ECKey mPrivateKey;