1 files changed, 3 insertions, 2 deletions
diff --git a/Library/Formula/mg.rb b/Library/Formula/mg.rb
index 3a1ee3dc6..7c71b5871 100644
--- a/Library/Formula/mg.rb
+++ b/Library/Formula/mg.rb
@@ -6,7 +6,8 @@ class Mg < Formula
   md5 '5cdd46b226586306bde2dd5d47920d66'
 
   def install
-    system "make prefix=#{prefix}"
-    system "make install prefix=#{prefix}"
+    system "make PREFIX=#{prefix}"
+    bin.mkpath # otherwise install copies 'mg' to 'bin'
+    system "make install PREFIX=#{prefix}"
   end
 end