diff --git a/plugins/factoid.go b/plugins/factoid.go
index d079184..5198c5f 100644
--- a/plugins/factoid.go
+++ b/plugins/factoid.go
@@ -19,7 +19,7 @@ import (
 
 // factoid stores info about our factoid for lookup and later interaction
 type Factoid struct {
-	Id           bson.ObjectId `bson:"_id"`
+	Id           bson.ObjectId `bson:"_id,omitempty"`
 	Idx          int
 	Trigger      string
 	Operator     string