diff --git a/Yep/Views/TextViews/ChatTextView.swift b/Yep/Views/TextViews/ChatTextView.swift
index 7d03647c..a32c890b 100644
--- a/Yep/Views/TextViews/ChatTextView.swift
+++ b/Yep/Views/TextViews/ChatTextView.swift
@@ -35,7 +35,7 @@ class ChatTextView: UITextView {
 
             // mention link
 
-            let mentionPattern = "@[^\\s:：,，@]+$?"
+            let mentionPattern = "@[A-Za-z0-9_]+$?"
 
             let mentionExpression = try! NSRegularExpression(pattern: mentionPattern, options: NSRegularExpressionOptions())