diff --git a/bin/rdebug-ide b/bin/rdebug-ide
index 698564e..a72dfd1 100755
--- a/bin/rdebug-ide
+++ b/bin/rdebug-ide
@@ -131,14 +131,6 @@ else
   Debugger::PROG_SCRIPT = $0
 end
 
-if RUBY_VERSION < "1.9"
-   lib_path = File.expand_path(File.dirname(__FILE__) + "/../lib/")
-   $: << lib_path unless $:.include? lib_path
-   require 'ruby-debug-ide/thread_alias.rb'
-else
-  require_relative '../lib/ruby-debug-ide/thread_alias'
-end
-
 if options.dispatcher_port != -1
   ENV['IDE_PROCESS_DISPATCHER'] = options.dispatcher_port.to_s
   if RUBY_VERSION < "1.9"
diff --git a/lib/ruby-debug-ide/command.rb b/lib/ruby-debug-ide/command.rb
index 55f96f7..ecbd2ba 100644
--- a/lib/ruby-debug-ide/command.rb
+++ b/lib/ruby-debug-ide/command.rb
@@ -4,6 +4,7 @@
   require 'debase'
 end
 
+require 'ruby-debug-ide/thread_alias'
 require 'ruby-debug-ide/helper'
 require 'delegate'
 
diff --git a/lib/ruby-debug-ide/version.rb b/lib/ruby-debug-ide/version.rb
index 36552ae..8524da7 100755
--- a/lib/ruby-debug-ide/version.rb
+++ b/lib/ruby-debug-ide/version.rb
@@ -1,3 +1,3 @@
 module Debugger
-  IDE_VERSION='0.7.0.beta3'
+  IDE_VERSION='0.7.0.beta4'
 end