diff --git a/tool/downloader.rb b/tool/downloader.rb
index b28fcfb559..157561269d 100644
--- a/tool/downloader.rb
+++ b/tool/downloader.rb
@@ -32,7 +32,7 @@ end
 class Downloader
   class GNU < self
     def self.download(name, *rest)
-      super("http://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=#{name};hb=HEAD", name, *rest)
+      super("http://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=#{name};hb=master", name, *rest)
     end
   end