diff --git a/mongo/mongo.go b/mongo/mongo.go
index 4c3855f..d0bff5f 100644
--- a/mongo/mongo.go
+++ b/mongo/mongo.go
@@ -29,9 +29,13 @@ type MongoDB struct {
 	Cache bool
 }
 
-func DB(cache bool) *MongoDB {
+func DB(cache ...bool) *MongoDB {
+	b := true
+	if len(cache) > 0 {
+		b = cache[0]
+	}
 	return &MongoDB{
-		Cache: cache,
+		Cache: b,
 	}
 }