diff --git a/db.go b/db.go
index 4c8c156..d5c53f4 100644
--- a/db.go
+++ b/db.go
@@ -441,7 +441,8 @@ func (db *DB) init() error {
 }
 
 // Close releases all database resources.
-// All transactions must be closed before closing the database.
+// It will block waiting for any open transactions to finish
+// before closing the database and returning.
 func (db *DB) Close() error {
 	db.rwlock.Lock()
 	defer db.rwlock.Unlock()