diff --git a/db/booker.ts b/db/booker.ts
index dbae651..2639c2d 100644
--- a/db/booker.ts
+++ b/db/booker.ts
@@ -23,8 +23,5 @@ const BookerSchema = new mongoose.Schema<BookerDocument>(
   { timestamps: true, collation: { locale: 'de', strength: 1 } }
 )
 
-const Model = mongoose.model<BookerDocument, BookerModel>(
-  'Booker',
-  BookerSchema
-)
-export default Model
+export default <BookerModel>mongoose.models.Booker ||
+  mongoose.model<BookerDocument, BookerModel>('Booker', BookerSchema)
diff --git a/db/booking.ts b/db/booking.ts
index 7748156..c485162 100644
--- a/db/booking.ts
+++ b/db/booking.ts
@@ -86,9 +86,5 @@ BookingSchema.static('findBookedDays', async function (): Promise<string[]> {
     .sort()
 })
 
-const Model: BookingModel = mongoose.model<BookingDocument, BookingModel>(
-  'Booking',
-  BookingSchema
-)
-
-export default Model
+export default <BookingModel>mongoose.models.Booking ||
+  mongoose.model<BookingDocument, BookingModel>('Booking', BookingSchema)
diff --git a/db/index.ts b/db/index.ts
index 4ce044e..f77e873 100644
--- a/db/index.ts
+++ b/db/index.ts
@@ -1,7 +1,6 @@
 import * as mongoose from 'mongoose'
 import Booker from './booker'
 import Booking from './booking'
-import { BOOKING_STATUS } from './bookingStatus'
 
 let connectedPromise: Promise<typeof mongoose>