diff --git a/lib/faraday/uid2/middleware.rb b/lib/faraday/uid2/middleware.rb
index 2a78008..a841df2 100644
--- a/lib/faraday/uid2/middleware.rb
+++ b/lib/faraday/uid2/middleware.rb
@@ -53,7 +53,7 @@ def process_response(env)
           nonce = payload[8..15]
           raise Faraday::ParsingError.new("Nonce mismatch", env[:response]) if nonce != @nonce
 
-          payload[16..-1]
+          payload[16..]
         end
 
         env.response_headers["Content-Type"] = "application/json"