diff --git a/core/service.go b/core/service.go
index a1e2ae4..2a1c017 100644
--- a/core/service.go
+++ b/core/service.go
@@ -169,7 +169,7 @@ type Maintenance struct {
 type DivisionForUser struct {
 	Priority    int               `bson:"priority" json:"priority"`
 	State       DivisionStateName `bson:"state" json:"state"`
-	Maintenance *Maintenance      `bson:",omitempty" json:",omitempty"`
+	Maintenance *Maintenance      `bson:"maintenance,omitempty" json:"maintenance,omitempty"`
 }
 
 type Division struct {