diff --git a/lib/monadic/maybe.rb b/lib/monadic/maybe.rb
index <HASH>..<HASH> 100644
--- a/lib/monadic/maybe.rb
+++ b/lib/monadic/maybe.rb
@@ -26,7 +26,7 @@ module Monadic
 
     # @return [true, false] true if the underlying value is true
     def truly?
-      @value == true
+      !!@value == true
     end
   end
Use a double bang (double negation) to force @value to a boolean