diff --git a/unifi/setting_mgmt.go b/unifi/setting_mgmt.go
index 20d8405..f93ff52 100644
--- a/unifi/setting_mgmt.go
+++ b/unifi/setting_mgmt.go
@@ -9,5 +9,6 @@ func (c *Client) GetSettingMgmt(ctx context.Context, site string) (*SettingMgmt,
 }
 
 func (c *Client) UpdateSettingMgmt(ctx context.Context, site string, d *SettingMgmt) (*SettingMgmt, error) {
+	d.Key = "mgmt"
 	return c.updateSettingMgmt(ctx, site, d)
 }