diff --git a/lib/fog/dnsmadeeasy/dns.rb b/lib/fog/dnsmadeeasy/dns.rb
index bd8999ddf..bc0af9997 100644
--- a/lib/fog/dnsmadeeasy/dns.rb
+++ b/lib/fog/dnsmadeeasy/dns.rb
@@ -127,7 +127,7 @@ module Fog
 
         def signature(params)
           string_to_sign = params[:headers]['x-dnsme-requestDate']
-          signed_string = OpenSSL::HMAC.hexdigest('sha1', @dnsmadeeasy_secret_key, string_to_sign)
+          OpenSSL::HMAC.hexdigest('sha1', @dnsmadeeasy_secret_key, string_to_sign)
         end
       end
     end