diff --git a/lib/shoulda/matchers/active_model/validate_acceptance_of_matcher.rb b/lib/shoulda/matchers/active_model/validate_acceptance_of_matcher.rb
index 67932bf6..1c64d2cb 100644
--- a/lib/shoulda/matchers/active_model/validate_acceptance_of_matcher.rb
+++ b/lib/shoulda/matchers/active_model/validate_acceptance_of_matcher.rb
@@ -92,7 +92,7 @@ module Shoulda
         end
 
         def simple_description
-          "validate that #{@attribute} has been set to true"
+          %(validate that :#{@attribute} has been set to "1")
         end
       end
     end