diff --git a/config/environment.rb b/config/environment.rb
index 3c0c53da..ee81c00d 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -7,7 +7,7 @@ rexml_versions = ['', File.dirname(__FILE__) + '/../vendor/plugins/rexml/lib/'].
   `ruby -r #{v + 'rexml/rexml'} -e 'p REXML::VERSION'`.split('.').collect {|n| n.to_i} }
 $:.unshift(File.dirname(__FILE__) + '/../vendor/plugins/rexml/lib') if (rexml_versions[0] <=> rexml_versions[1]) == -1
 
-$: << File.dirname(__FILE__) + '/../vendor/plugins/rack/lib'
+$:.unshift(File.dirname(__FILE__) + '/../vendor/plugins/rack/lib')
 require File.join(File.dirname(__FILE__), 'boot')
 
 require 'active_support/secure_random'
diff --git a/instiki b/instiki
index 757a8312..33688533 100755
--- a/instiki
+++ b/instiki
@@ -1,6 +1,6 @@
 #!/usr/bin/env ruby
 
-$: << File.dirname(__FILE__) + '/vendor/plugins/rack/lib'
+$:.unshift(File.dirname(__FILE__) + '/vendor/plugins/rack/lib')
 # Executable file for a gem
 # must be same as ./instiki.rb