diff --git a/src/CONST.ts b/src/CONST.ts
index 9ce1152d5dcb..a11faa33323e 100755
--- a/src/CONST.ts
+++ b/src/CONST.ts
@@ -1263,7 +1263,7 @@ const CONST = {
         CARD_NUMBER: /^[0-9]{15,16}$/,
         CARD_SECURITY_CODE: /^[0-9]{3,4}$/,
         CARD_EXPIRATION_DATE: /^(0[1-9]|1[0-2])([^0-9])?([0-9]{4}|([0-9]{2}))$/,
-        ROOM_NAME: /^#[a-z0-9à-ÿ-]{1,80}$/,
+        ROOM_NAME: /^#[\p{Ll}0-9-]{1,80}$/u,
 
         // eslint-disable-next-line max-len, no-misleading-character-class
         EMOJIS: /[\p{Extended_Pictographic}](\u200D[\p{Extended_Pictographic}]|[\u{1F3FB}-\u{1F3FF}]|[\u{E0020}-\u{E007F}]|\uFE0F|\u20E3)*|[\u{1F1E6}-\u{1F1FF}]{2}|[#*0-9]\uFE0F?\u20E3/gu,
diff --git a/tests/unit/ValidationUtilsTest.js b/tests/unit/ValidationUtilsTest.js
index 003e0ab75afe..a9e0b1b61128 100644
--- a/tests/unit/ValidationUtilsTest.js
+++ b/tests/unit/ValidationUtilsTest.js
@@ -253,6 +253,14 @@ describe('ValidationUtils', () => {
         test('room name with spanish Accented letters and dashes', () => {
             expect(ValidationUtils.isValidRoomName('#sala-de-opinión')).toBe(true);
         });
+
+        test('room name with division sign (÷)', () => {
+            expect(ValidationUtils.isValidRoomName('#room-name-with-÷-sign')).toBe(false);
+        });
+
+        test('room name with Greek alphabets and Cyrillic alphabets', () => {
+            expect(ValidationUtils.isValidRoomName('#σοβαρός-серьезный')).toBe(true);
+        });
     });
 
     describe('isValidWebsite', () => {