lib/json/jwt.rb in json-jwt-1.6.2 vs lib/json/jwt.rb in json-jwt-1.6.3

@@ -32,10 +32,10 @@
         #  I'd like to make :RS256 default.
         #  However, by histrical reasons, :HS256 was default.
         #  This code is needed to keep legacy behavior.
         algorithm = private_key_or_secret.is_a?(String) ? :HS256 : :RS256
       end
-      jws = JWS.new self.dup
+      jws = JWS.new self
       jws.kid ||= private_key_or_secret[:kid] if private_key_or_secret.is_a? JSON::JWK
       jws.alg = algorithm
       jws.sign! private_key_or_secret
     end
 
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