1 files changed, 6 insertions, 5 deletions
diff --git a/Library/Formula/muscle.rb b/Library/Formula/muscle.rb
index 5445c2f8a..95cd61eb0 100644
--- a/Library/Formula/muscle.rb
+++ b/Library/Formula/muscle.rb
@@ -1,14 +1,15 @@
 require 'formula'
 
 class Muscle < Formula
-  url 'http://www.drive5.com/muscle/downloads3.8.31/muscle3.8.31_src.tar.gz'
   homepage 'http://www.drive5.com/muscle/'
-  md5 'f767f00fd15f0c5db944d41936779e10'
+  url 'http://www.drive5.com/muscle/downloads3.8.31/muscle3.8.31_src.tar.gz'
   version '3.8.31'
+  md5 'f767f00fd15f0c5db944d41936779e10'
 
   def install
-    Dir.chdir "src"
-    system "make"
-    bin.install "muscle"
+    cd "src" do
+      system "make"
+      bin.install "muscle"
+    end
   end
 end