diff --git a/Dockerfile b/Dockerfile
index d893225..265336b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -52,7 +52,8 @@ RUN find public/assets -type f -name "*.gz" | sed -re "s/\.gz$//" | xargs -r bro
 # assets ya están pre-compilados.
 RUN sed -re "/(uglifier|bootstrap|coffee-rails)/d" -i Gemfile
 RUN bundle clean
-
+COPY ./mobility.patch .
+RUN patch -N -i mobility.patch
 
 # Contenedor final
 FROM sutty/monit:latest
diff --git a/app/models/invitadx.rb b/app/models/invitadx.rb
index a51659e..e330e74 100644
--- a/app/models/invitadx.rb
+++ b/app/models/invitadx.rb
@@ -1 +1,3 @@
+# frozen_string_literal: true
+
 class Invitadx < ApplicationRecord; end
diff --git a/mobility.patch b/mobility.patch
new file mode 100644
index 0000000..ffdd69a
--- /dev/null
+++ b/mobility.patch
@@ -0,0 +1,11 @@
+---  /srv/http/vendor/ruby/gems/2.5.0/gems/mobility-0.8.7/lib/mobility/arel/visitor.rb.orig	2019-08-29 14:20:24.180122614 -0300
++++  /srv/http/vendor/ruby/gems/2.5.0/gems/mobility-0.8.7/lib/mobility/arel/visitor.rb	2019-08-29 14:18:38.146723362 -0300
+@@ -14,7 +14,7 @@
+ 
+       private
+ 
+-      def visit(object)
++      def visit(object, collection = nil)
+         super
+       rescue TypeError
+         visit_default(object)