diff --git a/cronexpression.go b/cronexpression.go
index 8c14c56..0f6e783 100644
--- a/cronexpression.go
+++ b/cronexpression.go
@@ -8,6 +8,7 @@
  *
  */
 
+// Package cronexpression parses cron time expressions.
 package cronexpression
 
 /******************************************************************************/