diff --git a/bin/gdb_wrapper b/bin/gdb_wrapper
index 2442036..a439204 100755
--- a/bin/gdb_wrapper
+++ b/bin/gdb_wrapper
@@ -65,10 +65,7 @@ unless options.ruby_path
   exit 1
 end
 
-main_process_argv = ARGV
-main_process_argv << '--gdb-wrapper-pid' << "#{Process.pid}"
-argv = '["' + main_process_argv * '", "' + '"]'
-
+argv = '["' + ARGV * '", "' + '"]'
 child_argv = '["' + ARGV * '", "' + "', '--ignore-port" + '"]'
 debugger_loader_path = File.expand_path(File.dirname(__FILE__)) + '/../lib/ruby-debug-ide/attach/debugger_loader'
 
diff --git a/bin/rdebug-ide b/bin/rdebug-ide
index 1a244bd..3054353 100755
--- a/bin/rdebug-ide
+++ b/bin/rdebug-ide
@@ -28,7 +28,6 @@ options = OpenStruct.new(
     'value_as_nested_element' => false,
     'attach_mode' => false,
     'cli_debug' => false,
-    'gdb_wrapper_pid' => nil,
     'key_value_mode' => false
 )
 
@@ -44,8 +43,6 @@ EOB
 
   opts.on("-h", "--host HOST", "Host name used for remote debugging") {|host| options.host = host}
   opts.on("-p", "--port PORT", Integer, "Port used for remote debugging") {|port| options.port = port}
-  opts.on("-gdbp", "--gdb-wrapper-pid PID", Integer, "Pid of corresponding gdb_wrapper (for attach case)") {|pid| options.gdb_wrapper_pid = pid}
-
   opts.on("--dispatcher-port PORT", Integer, "Port used for multi-process debugging dispatcher") do |dp|
     options.dispatcher_port = dp
   end
@@ -176,7 +173,6 @@ Debugger.value_as_nested_element = options.value_as_nested_element || options.rm
 Debugger.key_value_mode = options.key_value_mode
 
 if options.attach_mode
-  at_exit {Process.kill('INT', options.gdb_wrapper_pid)} if options.gdb_wrapper_pid
   if Debugger::FRONT_END == "debase"
     Debugger.init_variables
   end
diff --git a/lib/ruby-debug-ide/version.rb b/lib/ruby-debug-ide/version.rb
index 9b16003..c47f24f 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.beta5'
+  IDE_VERSION='0.7.0.beta6'
 end