diff --git a/lib/aasm/core/event.rb b/lib/aasm/core/event.rb
index b372282..77747f8 100644
--- a/lib/aasm/core/event.rb
+++ b/lib/aasm/core/event.rb
@@ -110,6 +110,10 @@ module AASM::Core
       transitions.flat_map(&:failures)
     end
 
+    def to_s
+      name.to_s
+    end
+
   private
 
     def attach_event_guards(definitions)