diff --git a/ActiveLabel/RegexParser.swift b/ActiveLabel/RegexParser.swift
index fe9bd7ab..fc948541 100644
--- a/ActiveLabel/RegexParser.swift
+++ b/ActiveLabel/RegexParser.swift
@@ -11,7 +11,7 @@ import Foundation
 struct RegexParser {
 
     static let hashtagPattern = "(?:^|\\s|$)#[\\p{L}0-9_]*"
-    static let mentionPattern = "(?:^|\\s|$|[.])@[\\p{L}0-9_]*"
+    static let mentionPattern = "(?:^|\\s|$|[.])@[\\p{L}0-9_\\.]*"
     static let emailPattern = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
     static let urlPattern = "(^|[\\s.:;?\\-\\]<\\(])" +
         "((https?://|www\\.|pic\\.)[-\\w;/?:@&=+$\\|\\_.!~*\\|'()\\[\\]%#,☺]+[\\w/#](\\(\\))?)" +