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-rw-r--r--app/models/account.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/app/models/account.rb b/app/models/account.rb
index 14269860f..c88c6ec44 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -48,7 +48,7 @@
 
 class Account < ApplicationRecord
   USERNAME_RE = /[a-z0-9_]+([a-z0-9_\.]+[a-z0-9_]+)?/i
-  MENTION_RE  = /(?<=^|[^\/[:word:]])@((#{USERNAME_RE}?)(?:@[a-z0-9\.\-]+[a-z0-9]+)?)/i
+  MENTION_RE  = /(?<=^|[^\/[:word:]])@((#{USERNAME_RE})(?:@[a-z0-9\.\-]+[a-z0-9]+)?)/i
 
   include AccountAvatar
   include AccountFinderConcern