diff --git a/acme4j-client/src/main/java/org/shredzone/acme4j/challenge/TokenChallenge.java b/acme4j-client/src/main/java/org/shredzone/acme4j/challenge/TokenChallenge.java
index 1ba57fa4..66fae937 100644
--- a/acme4j-client/src/main/java/org/shredzone/acme4j/challenge/TokenChallenge.java
+++ b/acme4j-client/src/main/java/org/shredzone/acme4j/challenge/TokenChallenge.java
@@ -22,7 +22,6 @@ import org.jose4j.lang.JoseException;
 import org.shredzone.acme4j.Login;
 import org.shredzone.acme4j.exception.AcmeProtocolException;
 import org.shredzone.acme4j.toolbox.JSON;
-import org.shredzone.acme4j.toolbox.JSONBuilder;
 
 /**
  * An extension of {@link Challenge} that handles challenges with a {@code token} and
@@ -45,11 +44,6 @@ public class TokenChallenge extends Challenge {
         super(login, data);
     }
 
-    @Override
-    protected void prepareResponse(JSONBuilder response) {
-        super.prepareResponse(response);
-    }
-
     /**
      * Gets the token.
      */