diff --git a/ruby-sockets/ping-pong/em-server.rb b/ruby-sockets/ping-pong/em-server.rb
index 9ba0823..f6101f5 100644
--- a/ruby-sockets/ping-pong/em-server.rb
+++ b/ruby-sockets/ping-pong/em-server.rb
@@ -20,7 +20,7 @@ module PongServer
   end
 end
 
-EventMachine::run do
-  EventMachine::start_server('0.0.0.0', 24000, PongServer)
+EventMachine.run do
+  EventMachine.start_server('0.0.0.0', 24000, PongServer)
   puts 'Listening on 0.0.0.0:24000'
 end