diff --git a/Library/Homebrew/cmd/audit.rb b/Library/Homebrew/cmd/audit.rb
index 54046e48db..1182e73285 100644
--- a/Library/Homebrew/cmd/audit.rb
+++ b/Library/Homebrew/cmd/audit.rb
@@ -56,7 +56,7 @@ end
 
 class FormulaText
   def initialize path
-    @text = path.open('r') { |f| f.read }
+    @text = path.open("rb", &:read)
   end
 
   def without_patch