diff --git a/tool/downloader.rb b/tool/downloader.rb
index 7c29132d7b..f212442d71 100644
--- a/tool/downloader.rb
+++ b/tool/downloader.rb
@@ -8,7 +8,7 @@ class Downloader
   rescue => e
     raise "failed to download #{name}\n#{e.message}: #{url}"
   end
-  
+
   # Update a file from url if newer version is available.
   # Creates the file if the file doesn't yet exist; however, the
   # directory where the file is being created has to exist already.