diff --git a/lib/net/ldap/filter.rb b/lib/net/ldap/filter.rb
index fb24476..b323762 100644
--- a/lib/net/ldap/filter.rb
+++ b/lib/net/ldap/filter.rb
@@ -464,7 +464,8 @@ def parse_filter_branch scanner
       if op = scanner.scan( /\=|\<\=|\<|\>\=|\>|\!\=/ )
         scanner.scan(/\s*/)
         #if value = scanner.scan( /[\w\*\.]+/ ) (ORG)
-        if value = scanner.scan( /[\w\*\.\+\-@=#\$%&! ]+/ )
+        #if value = scanner.scan( /[\w\*\.\+\-@=#\$%&! ]+/ ) (ff suggested by Kouhei Sutou
+	if value = scanner.scan( /(?:[\w\*\.\+\-@=#\$%&! ]|\\[a-fA-F\d]{2,2})+/ )
           case op
           when "="
             Filter.eq( token, value )