diff --git a/lib/oktakit/response/raise_error.rb b/lib/oktakit/response/raise_error.rb
index 9175be2..5837a48 100644
--- a/lib/oktakit/response/raise_error.rb
+++ b/lib/oktakit/response/raise_error.rb
@@ -7,6 +7,8 @@ module Response
     # This class raises an Oktakit-flavored exception based
     # HTTP status codes returned by the API
     class RaiseError < Faraday::Response::Middleware
+      private
+
       def on_complete(response)
         if (error = Oktakit::Error.from_response(response))
           raise error