diff --git a/Library/Homebrew/formula_support.rb b/Library/Homebrew/formula_support.rb
index caf82f7651..d4e6a1476b 100644
--- a/Library/Homebrew/formula_support.rb
+++ b/Library/Homebrew/formula_support.rb
@@ -177,6 +177,10 @@ class Option
   end
   alias_method :to_str, :to_s
 
+  def to_json
+    flag.inspect
+  end
+
   def eql?(other)
     @name == other.name
   end