diff --git a/main.py b/main.py
index 73569c1..54c7fb3 100755
--- a/main.py
+++ b/main.py
@@ -2,6 +2,7 @@
 
 import logging
 import os
+import re
 import traceback
 from datetime import datetime, timedelta
 from html import escape
@@ -144,6 +145,8 @@ def _sign_text(text, m: Message, limit):
     if not text:
         text = ''
 
+    text = re.sub(r'<a href="(tg://.*?)">.*?</a>', '<a href="\\1">\\1</a>', text)
+
     sign = ''
     if text.startswith('!sign') or text.startswith('/sign'):
         text = text[5:]