diff --git a/src/config.ts b/src/config.ts
index 434b09e6c..71329341a 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -217,9 +217,9 @@ export const CONTENT_NOT_SUPPORTED = 'The message is not supported on this versi
 // eslint-disable-next-line max-len
 export const RE_LINK_TEMPLATE = '((ftp|https?):\\/\\/)?((www\\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\\.[a-zA-Z0-9()]{1,63})\\b([-a-zA-Z0-9()@:%_+.~#?&/=]*)';
 export const RE_MENTION_TEMPLATE = '(@[\\w\\d_-]+)';
-export const RE_TG_LINK = /^tg:(\/\/)?/;
-export const RE_TME_LINK = /^(https?:\/\/)?([-a-zA-Z0-9@:%_+~#=]{1,32}\.)?t\.me/;
-export const RE_TELEGRAM_LINK = /^(https?:\/\/)?telegram\.org\//;
+export const RE_TG_LINK = /^tg:(\/\/)?/i;
+export const RE_TME_LINK = /^(https?:\/\/)?([-a-zA-Z0-9@:%_+~#=]{1,32}\.)?t\.me/i;
+export const RE_TELEGRAM_LINK = /^(https?:\/\/)?telegram\.org\//i;
 export const TME_LINK_PREFIX = 'https://t.me/';
 export const USERNAME_PURCHASE_ERROR = 'USERNAME_PURCHASE_AVAILABLE';
 export const PURCHASE_USERNAME = 'auction';
diff --git a/src/global/actions/api/chats.ts b/src/global/actions/api/chats.ts
index 7ed4b2818..896af0baf 100644
--- a/src/global/actions/api/chats.ts
+++ b/src/global/actions/api/chats.ts
@@ -868,7 +868,7 @@ addActionHandler('openTelegramLink', (global, actions, payload): ActionReturnTyp
     return;
   }
 
-  const uri = new URL(url.startsWith('http') ? url : `https://${url}`);
+  const uri = new URL(url.toLowerCase().startsWith('http') ? url : `https://${url}`);
   if (TME_WEB_DOMAINS.has(uri.hostname) && uri.pathname === '/') {
     window.open(uri.toString(), '_blank', 'noopener');
     return;