diff --git a/api/advent22_api/config.py b/api/advent22_api/config.py
index 53e78c4..605986e 100644
--- a/api/advent22_api/config.py
+++ b/api/advent22_api/config.py
@@ -13,13 +13,7 @@ class User(BaseModel):
     password: str
 
 
-class Puzzle(BaseModel):
-    background: str
-    font: str
-    solution: str
-
-
-class Door(BaseModel):
+class DoorSaved(BaseModel):
     day: int
     x1: int
     y1: int
@@ -27,13 +21,19 @@ class Door(BaseModel):
     y2: int
 
 
-Doors: TypeAlias = list[Door] | None
+DoorsSaved: TypeAlias = list[DoorSaved]
+
+
+class Puzzle(BaseModel):
+    background: str
+    doors: DoorsSaved = []
+    font: str
+    solution: str
 
 
 class Config(BaseModel):
     admin: User
     puzzle: Puzzle
-    doors: Doors = []
 
 
 async def get_config() -> Config:
diff --git a/api/advent22_api/routers/general.py b/api/advent22_api/routers/general.py
index 49ac110..7b2cf3b 100644
--- a/api/advent22_api/routers/general.py
+++ b/api/advent22_api/routers/general.py
@@ -2,7 +2,7 @@ from fastapi import APIRouter, Depends
 from fastapi.responses import StreamingResponse
 from PIL import Image
 
-from ..config import Config, Doors, get_config, set_config
+from ..config import Config, DoorsSaved, get_config, set_config
 from ..dav_common import dav_get_file
 from ._misc import api_return_image
 
@@ -28,22 +28,22 @@ async def get_image_for_day(
 @router.get("/doors")
 async def get_doors(
     cfg: Config = Depends(get_config),
-) -> Doors:
+) -> DoorsSaved:
     """
     Türchen lesen
     """
 
-    return cfg.doors
+    return cfg.puzzle.doors
 
 
 @router.put("/doors")
 async def put_doors(
-    doors: Doors,
+    doors: DoorsSaved,
     cfg: Config = Depends(get_config),
 ) -> None:
     """
     Türchen setzen
     """
 
-    cfg.doors = doors
+    cfg.puzzle.doors = doors
     await set_config(cfg)
diff --git a/ui/src/components/DoorMapEditor.vue b/ui/src/components/DoorMapEditor.vue
index d557b32..845c394 100644
--- a/ui/src/components/DoorMapEditor.vue
+++ b/ui/src/components/DoorMapEditor.vue
@@ -28,7 +28,7 @@
 </template>
 
 <script lang="ts">
-import { Door, DoorSerialized } from "@/lib/door";
+import { Door, DoorsSaved } from "@/lib/door";
 import { Options, Vue } from "vue-class-component";
 
 import BulmaBreadcrumbs, { Step } from "./BulmaBreadcrumbs.vue";
@@ -56,24 +56,24 @@ export default class extends Vue {
   public doors: Door[] = [];
 
   public load_doors() {
-    this.$advent22.api_get<DoorSerialized[]>("/general/doors").then((data) => {
+    this.$advent22.api_get<DoorsSaved>("/general/doors").then((data) => {
       this.doors.length = 0;
 
       for (const value of data) {
-        this.doors.push(Door.deserialize(value));
+        this.doors.push(Door.load(value));
       }
     });
   }
 
   public save_doors() {
-    const data: DoorSerialized[] = [];
+    const data: DoorsSaved = [];
 
     for (const door of this.doors) {
       if (door.day === -1) {
         continue;
       }
 
-      data.push(door.serialized);
+      data.push(door.save());
     }
 
     this.$advent22.api_put("/general/doors", data);
diff --git a/ui/src/lib/door.ts b/ui/src/lib/door.ts
index aff4492..5ddd45a 100644
--- a/ui/src/lib/door.ts
+++ b/ui/src/lib/door.ts
@@ -1,7 +1,7 @@
 import { Rectangle } from "./rectangle";
 import { Vector2D } from "./vector2d";
 
-export interface DoorSerialized {
+export interface DoorSaved {
   day: number;
   x1: number;
   y1: number;
@@ -9,6 +9,8 @@ export interface DoorSerialized {
   y2: number;
 }
 
+export type DoorsSaved = DoorSaved[];
+
 export class Door {
   private _day = -1;
   public position: Rectangle;
@@ -35,7 +37,7 @@ export class Door {
     }
   }
 
-  public static deserialize(serialized: DoorSerialized): Door {
+  public static load(serialized: DoorSaved): Door {
     return new Door(
       new Rectangle(
         new Vector2D(serialized.x1, serialized.y1),
@@ -45,7 +47,7 @@ export class Door {
     );
   }
 
-  public get serialized(): DoorSerialized {
+  public save(): DoorSaved {
     return {
       day: this.day,
       x1: this.position.origin.x,