diff --git a/.rubocop.yml b/.rubocop.yml
index 29d19a8..d05e655 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -9,3 +9,6 @@ Metrics/BlockLength:
 
 Metrics/MethodLength:
   Max: 40
+
+Metrics/AbcSize:
+  Max: 50
diff --git a/app/controllers/messages_controller.rb b/app/controllers/messages_controller.rb
index e2477a2..0fdd1f0 100644
--- a/app/controllers/messages_controller.rb
+++ b/app/controllers/messages_controller.rb
@@ -15,7 +15,8 @@ def index
     # %> and <-> are defined by pg_trgm.
     # https://www.postgresql.org/docs/17/pgtrgm.html
     message_where = if Rails.env.production?
-      Message.where('body %> ? AND list_id IN (?) ORDER BY body <-> ?', query, list_ids, query)
+      Message.where('body %> ? AND list_id IN (?)', query, list_ids)
+        .order(Arel.sql('body <-> ?', query))
     else
       Message.where('body LIKE ? AND list_id IN (?)', "%#{query}%", list_ids)
     end
@@ -36,7 +37,7 @@ def show
   def get_list_ids(params)
     list_ids = []
     ['ruby-talk', 'ruby-core', 'ruby-list', 'ruby-dev'].each do |name|
-      if params[name.tr('-', '_').to_sym] == '1'
+      if params[name.tr('-', '_').to_sym] != '0'
         list_ids << List.find_by_name(name).id
       end
     end