diff --git a/components/MaintenanceAlert.tsx b/components/MaintenanceAlert.tsx
index 2c514e3..40f9d20 100644
--- a/components/MaintenanceAlert.tsx
+++ b/components/MaintenanceAlert.tsx
@@ -6,7 +6,7 @@ export default function MaintenanceAlert({
   maintenance,
   style,
 }: {
-  maintenance: Omit<MaintenanceConfig, 'monitors'> & { monitors: MonitorTarget[] }
+  maintenance: Omit<MaintenanceConfig, 'monitors'> & { monitors?: MonitorTarget[] }
   style?: React.CSSProperties
 }) {
   return (
@@ -36,7 +36,7 @@ export default function MaintenanceAlert({
       </div>
 
       <Text>{maintenance.body}</Text>
-      {maintenance.monitors.length > 0 && (
+      {maintenance.monitors && maintenance.monitors.length > 0 && (
         <>
           <Text mt="xs">
             <b>Affected components:</b>
diff --git a/components/OverallStatus.tsx b/components/OverallStatus.tsx
index 2c7d5d0..3c42ed5 100644
--- a/components/OverallStatus.tsx
+++ b/components/OverallStatus.tsx
@@ -58,7 +58,7 @@ export default function OverallStatus({
   })
 
   const now = new Date()
-  let filteredMaintenances: (Omit<MaintenanceConfig, 'monitors'> & { monitors: MonitorTarget[] })[] =
+  let filteredMaintenances: (Omit<MaintenanceConfig, 'monitors'> & { monitors?: MonitorTarget[] })[] =
     maintenances
       .filter((m) => now >= new Date(m.start) && (!m.end || now <= new Date(m.end)))
       .map((maintenance) => ({
diff --git a/types/config.ts b/types/config.ts
index 53fa176..a18be28 100644
--- a/types/config.ts
+++ b/types/config.ts
@@ -5,7 +5,7 @@ export type PageConfig = {
 }
 
 export type MaintenanceConfig = {
-  monitors: string[]
+  monitors?: string[]
   title?: string
   body: string
   start: number | string
diff --git a/uptime.config.ts b/uptime.config.ts
index c3bcbea..65e9356 100644
--- a/uptime.config.ts
+++ b/uptime.config.ts
@@ -126,7 +126,7 @@ const workerConfig: WorkerConfig = {
 // const maintenances: MaintenanceConfig[] = []
 const maintenances: MaintenanceConfig[] = [
   {
-    // Monitor IDs to be affected by this maintenance
+    // [Optional] Monitor IDs to be affected by this maintenance
     monitors: ['foo_monitor', 'bar_monitor'],
     // [Optional] default to "Scheduled Maintenance" if not specified
     title: 'Test Maintenance',
diff --git a/worker/src/index.ts b/worker/src/index.ts
index 204f16b..7ee17cd 100644
--- a/worker/src/index.ts
+++ b/worker/src/index.ts
@@ -38,7 +38,7 @@ const Worker = {
             new Date(timeNow * 1000) >= new Date(m.start) &&
             (!m.end || new Date(timeNow * 1000) <= new Date(m.end))
         )
-        .map((e) => e.monitors)
+        .map((e) => (e.monitors || []))
         .flat()
 
       if (maintenanceList.includes(monitor.id)) {