diff --git a/apps/scandic-web/components/HotelReservation/EnterDetails/Details/Multiroom/schema.ts b/apps/scandic-web/components/HotelReservation/EnterDetails/Details/Multiroom/schema.ts
index d6377a0da..830513eb1 100644
--- a/apps/scandic-web/components/HotelReservation/EnterDetails/Details/Multiroom/schema.ts
+++ b/apps/scandic-web/components/HotelReservation/EnterDetails/Details/Multiroom/schema.ts
@@ -73,7 +73,8 @@ export function getMultiroomDetailsSchema(
       (data) =>
         !crossValidationData.some(
           (room) =>
-            room.firstName === data.firstName && room.lastName === data.lastName
+            room.firstName.toLowerCase() === data.firstName.toLowerCase() &&
+            room.lastName.toLowerCase() === data.lastName.toLowerCase()
         ),
       {
         message: multiroomErrors.FIRST_AND_LAST_NAME_UNIQUE,
@@ -84,7 +85,8 @@ export function getMultiroomDetailsSchema(
       (data) =>
         !crossValidationData.some(
           (room) =>
-            room.firstName === data.firstName && room.lastName === data.lastName
+            room.firstName.toLowerCase() === data.firstName.toLowerCase() &&
+            room.lastName.toLowerCase() === data.lastName.toLowerCase()
         ),
       {
         message: multiroomErrors.FIRST_AND_LAST_NAME_UNIQUE,