diff --git a/bin/bundle b/bin/bundle
index d2e5081..17db3f0 100755
--- a/bin/bundle
+++ b/bin/bundle
@@ -1,9 +1,14 @@
 #!/usr/bin/env ruby
 
 # Check if an older version of bundler is installed
+mybasedir = __FILE__.gsub(/\/bin\/bundle/, '')
+
 require 'bundler'
 $:.each do |path|
-  if path =~ %r'/bundler-0.(\d+)' && $1.to_i < 9
+  # ignore the directory we're running from, in the tests
+  path = path.gsub(%r"^#{mybasedir}", '')
+
+  if path =~ %r'/bundler-0\.(\d+)' && $1.to_i < 9
     abort "Please remove older versions of bundler. This can be done by running `gem cleanup bundler`."
   end
 end