diff --git a/src/frontend/src/features/home/components/PersonalizeMeetingDialog.tsx b/src/frontend/src/features/home/components/PersonalizeMeetingDialog.tsx
index 6b2705e3..2295c79a 100644
--- a/src/frontend/src/features/home/components/PersonalizeMeetingDialog.tsx
+++ b/src/frontend/src/features/home/components/PersonalizeMeetingDialog.tsx
@@ -13,6 +13,10 @@ import {
   TextField,
 } from 'react-aria-components'
 import { css } from '@/styled-system/css'
+import {
+  MIN_ROOM_LENGTH,
+  ALPHANUMERIC_LOWERCASE,
+} from '@/features/rooms/utils/isRoomValid'
 
 export const PersonalizeMeetingDialog = ({
   isOpen,
@@ -43,10 +47,10 @@ export const PersonalizeMeetingDialog = ({
   }
 
   const validationErrors = []
-  if (roomSlug.length < 5) {
+  if (roomSlug.length < MIN_ROOM_LENGTH) {
     validationErrors.push(t('errors.validation.length'))
   }
-  if (!roomSlug.match(/^[a-z0-9]+$/)) {
+  if (!new RegExp(`^${ALPHANUMERIC_LOWERCASE}+$`).test(roomSlug)) {
     validationErrors.push(t('errors.validation.spaceOrSpecialCharacter'))
   }
 
diff --git a/src/frontend/src/features/rooms/utils/isRoomValid.ts b/src/frontend/src/features/rooms/utils/isRoomValid.ts
index 592a30d1..8c13a438 100644
--- a/src/frontend/src/features/rooms/utils/isRoomValid.ts
+++ b/src/frontend/src/features/rooms/utils/isRoomValid.ts
@@ -6,13 +6,18 @@
  */
 export const generatedRoomPattern = '[a-z]{3}-[a-z]{4}-[a-z]{3}'
 
+export const ALPHANUMERIC_LOWERCASE = '[a-z0-9]'
+
+// Minimum length requirement for personalized rooms
+export const MIN_ROOM_LENGTH = 5
+
 /**
  * Pattern for user-defined custom room IDs
  * Format: Minimum 5 lowercase alphanumeric characters
  * This pattern allows users to create memorable, personalized room names
  * while maintaining basic validation rules (e.g., myroom123, teamspace, project2024)
  */
-export const personalizedRoomPattern = '[a-z0-9]{5,}'
+export const personalizedRoomPattern = `${ALPHANUMERIC_LOWERCASE}{${MIN_ROOM_LENGTH},}`
 
 // Combined pattern that accepts both system-generated and personalized room IDs
 // This allows flexibility in room creation while maintaining consistent validation