diff --git a/lib/redmine/acts/mentionable.rb b/lib/redmine/acts/mentionable.rb
index 35659661f..c7b0c0655 100644
--- a/lib/redmine/acts/mentionable.rb
+++ b/lib/redmine/acts/mentionable.rb
@@ -103,9 +103,7 @@ module Redmine
             \s|
             \]|
             <|
-            [[:punct:]]?
-            $
-          )
+            $)
         /ix
       end
     end