diff --git a/tubestatus.rb b/tubestatus.rb
index 74cc9ca..e21a77e 100644
--- a/tubestatus.rb
+++ b/tubestatus.rb
@@ -27,7 +27,7 @@ class Tubestatus < Sinatra::Base
     end
 
     content_type :json
-    JSON data
+    JSON sort_lines(data)
   end
 
   get '/weekend.json' do
@@ -50,7 +50,7 @@ class Tubestatus < Sinatra::Base
     end
 
     content_type :json
-    JSON data
+    JSON sort_lines(data)
   end
 
   def weekend_line_mapping(name)
@@ -58,4 +58,8 @@ class Tubestatus < Sinatra::Base
                 'Waterloo & City' => 'Waterloo and City' }
     mapping[name] || name
   end
+
+  def sort_lines(lines)
+    lines.sort { |x, y| x[:name] <=> y[:name] }
+  end
 end