diff --git a/db/index.js b/db/index.js
index a38460d..39f183b 100644
--- a/db/index.js
+++ b/db/index.js
@@ -13,8 +13,10 @@ if (process.env.NODE_ENV !== 'production') {
   mongoose.modelNames().includes('Booking') && mongoose.deleteModel('Booking')
 }
 
-export const Booker = mongoose.model('Booker', BookerSchema)
-export const Booking = mongoose.model('Booking', BookingSchema)
+export const Booker =
+  mongoose.models.Booker || mongoose.model('Booker', BookerSchema)
+export const Booking =
+  mongoose.models.Booking || mongoose.model('Booking', BookingSchema)
 
 export async function getBookedDays() {
   const bookings = await Booking.find(