Remove NULL_DEVICE

1 files changed, 1 insertions, 2 deletions

diff --git a/Rakefile b/Rakefile
index 0a4d9c8900..a4dc782c68 100644
--- a/Rakefile
+++ b/Rakefile
@@ -3,8 +3,7 @@
 $:.unshift File.expand_path("../lib", __FILE__)
 require "benchmark"
 
-NULL_DEVICE = (Gem.win_platform? ? "NUL" : "/dev/null")
-RUBYGEMS_REPO = if `git -C "#{File.expand_path("..")}" remote --verbose 2> #{NULL_DEVICE}` =~ /rubygems/i
+RUBYGEMS_REPO = if `git -C "#{File.expand_path("..")}" remote --verbose 2> #{IO::NULL}` =~ /rubygems/i
   File.expand_path("..")
 else
   File.expand_path("tmp/rubygems")