diff --git a/lib/travis/api/app/endpoint/authorization.rb b/lib/travis/api/app/endpoint/authorization.rb
index 7039328b..c2eb4ec1 100644
--- a/lib/travis/api/app/endpoint/authorization.rb
+++ b/lib/travis/api/app/endpoint/authorization.rb
@@ -176,7 +176,7 @@ class Travis::Api::App
             :github_id => user.github_id,
             :education => user.education,
             :first_logged_in_at => timestamp.to_i}
-          puts "Sending payload to Customer.io: " + payload
+          puts "Sending payload to Customer.io: " + payload.to_s
           customerio.identify(payload)
         end