diff --git a/event/lifecycle/lifecycle.go b/event/lifecycle/lifecycle.go
index b25ca68..bed3b49 100644
--- a/event/lifecycle/lifecycle.go
+++ b/event/lifecycle/lifecycle.go
@@ -54,6 +54,10 @@ type Event struct {
 	DrawContext interface{}
 }
 
+func (e Event) String() string {
+	return fmt.Sprintf("lifecycle.Event{From:%v, To:%v, DrawContext:%v}", e.From, e.To, e.DrawContext)
+}
+
 // Crosses returns whether the transition from From to To crosses the stage s:
 // 	- It returns CrossOn if it does, and the lifecycle change is positive.
 // 	- It returns CrossOff if it does, and the lifecycle change is negative.