diff --git a/modules/core/src/main/scala/com/github/eikek/calev/internal/DefaultTrigger.scala b/modules/core/src/main/scala/com/github/eikek/calev/internal/DefaultTrigger.scala
index 6b8de17..ff2caef 100644
--- a/modules/core/src/main/scala/com/github/eikek/calev/internal/DefaultTrigger.scala
+++ b/modules/core/src/main/scala/com/github/eikek/calev/internal/DefaultTrigger.scala
@@ -1,6 +1,7 @@
 package com.github.eikek.calev.internal
 
 import java.time._
+
 import com.github.eikek.calev._
 
 /** Generate the next date-time that matches a calendar event and is closest but after a