diff --git a/telethon/extensions/markdown.py b/telethon/extensions/markdown.py
index a5dde5c6..680aabda 100644
--- a/telethon/extensions/markdown.py
+++ b/telethon/extensions/markdown.py
@@ -21,7 +21,7 @@ DEFAULT_DELIMITERS = {
     '```': MessageEntityPre
 }
 
-DEFAULT_URL_RE = re.compile(r'\[([^\]]+)\]\((.+?)\)')
+DEFAULT_URL_RE = re.compile(r'\[([\S\s]+?)\]\((.+?)\)')
 DEFAULT_URL_FORMAT = '[{0}]({1})'