diff --git a/frontend/src/stores/booking-modal-store.ts b/frontend/src/stores/booking-modal-store.ts
index ed711962c..3e7b58e2b 100644
--- a/frontend/src/stores/booking-modal-store.ts
+++ b/frontend/src/stores/booking-modal-store.ts
@@ -6,7 +6,7 @@ import { modalStates } from '@/definitions';
 export const useBookingModalStore = defineStore('bookingModal', () => {
   const open = ref(false);
   const state = ref(modalStates.open);
-  const stateData = ref<string|null>(null);
+  const stateData = ref<string>(null);
 
   const isLoading = computed(() => state.value === modalStates.loading);
   const isFinished = computed(() => state.value === modalStates.finished);