diff --git a/Rakefile.rb b/Rakefile.rb
index 097918c..a7cadb1 100644
--- a/Rakefile.rb
+++ b/Rakefile.rb
@@ -1,15 +1,17 @@
 require "rscons"
 
+WINDOWS_RUBY_PATH = "/cygdrive/c/Ruby193"
+
 task :default do
   Rscons::Environment.new do |env|
     if RUBY_PLATFORM =~ /cygwin/
       env["CC"] = "i686-pc-mingw32-gcc"
       env["CPPPATH"] += [
-        "C:/Ruby193/include/ruby-1.9.1",
-        "C:/Ruby193/include/ruby-1.9.1/i386-mingw32",
+        "#{WINDOWS_RUBY_PATH}/include/ruby-1.9.1",
+        "#{WINDOWS_RUBY_PATH}/include/ruby-1.9.1/i386-mingw32",
       ]
       env["LIBS"] += ["msvcrt-ruby191"]
-      env["LDFLAGS"] += ["-LC:/Ruby193/lib"]
+      env["LDFLAGS"] += ["-L#{WINDOWS_RUBY_PATH}/lib"]
     else
       env.parse_flags!("!pkg-config --cflags --libs ruby-1.9")
     end