diff --git a/ui/src/components/Calendar.vue b/ui/src/components/Calendar.vue
index b3006ff..02cf133 100644
--- a/ui/src/components/Calendar.vue
+++ b/ui/src/components/Calendar.vue
@@ -85,11 +85,13 @@ export default class extends Vue {
 
     if (this.store.is_touch_device) return;
 
-    this.toast_timeout = setTimeout(() => {
-      if (this.store.user_doors.length === 0) return;
+    this.store.when_initialized(() => {
+      this.toast_timeout = setTimeout(() => {
+        if (this.store.user_doors.length === 0) return;
 
-      this.toast!.show({ duration: 600000, type: "is-warning" });
-    }, 10000);
+        this.toast!.show({ duration: 600000, type: "is-warning" });
+      }, 10000);
+    });
   }
 
   public door_click(day: number) {
diff --git a/ui/src/plugins/store.ts b/ui/src/plugins/store.ts
index 8460713..681a09e 100644
--- a/ui/src/plugins/store.ts
+++ b/ui/src/plugins/store.ts
@@ -14,6 +14,8 @@ declare global {
 type State = {
   advent22: Advent22;
   api_creds: RemovableRef<Credentials>;
+  is_initialized: boolean;
+  on_initialized: (() => void)[];
   is_touch_device: boolean;
   is_admin: boolean;
   site_config: SiteConfigModel;
@@ -29,6 +31,8 @@ export const advent22Store = defineStore({
   state: (): State => ({
     advent22: new Advent22(),
     api_creds: useLocalStorage("advent22/auth", ["", ""]),
+    is_initialized: false,
+    on_initialized: [],
     is_touch_device:
       window.matchMedia("(any-hover: none)").matches ||
       "ontouchstart" in window ||
@@ -96,10 +100,21 @@ export const advent22Store = defineStore({
 
           if (next_door !== null)
             this.next_door_target = Date.now() + next_door;
+
+          this.is_initialized = true;
+          for (const callback of this.on_initialized) callback();
         })
         .catch(this.advent22.alert_user_error);
     },
 
+    when_initialized(callback: () => void): void {
+      if (this.is_initialized) {
+        callback();
+      } else {
+        this.on_initialized.push(callback);
+      }
+    },
+
     update_is_admin(): Promise<boolean> {
       return new Promise((resolve, reject) => {
         this.advent22