diff --git a/ChangeLog b/ChangeLog
index 0abf8377e1..e6171234c1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Apr 23 14:04:44 2013  Shugo Maeda  <shugo@ruby-lang.org>
+
+	* lib/net/imap.rb (getacl_response): parse the mailbox of an ACL
+	  response correctly.  [ruby-core:54365] [Bug #8281]
+
 Tue Apr 23 11:58:46 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* string.c (rb_str_scrub): fix for UTF-32.  strlen() on strings
diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index f68fe4551e..a816b4e263 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -1740,7 +1740,7 @@ module Net
     # rights:: The access rights the indicated user has to the
     #          mailbox.
     #
-    MailboxACLItem = Struct.new(:user, :rights)
+    MailboxACLItem = Struct.new(:user, :rights, :mailbox)
 
     # Net::IMAP::StatusData represents contents of the STATUS response.
     #
@@ -2806,6 +2806,7 @@ module Net
         token = match(T_ATOM)
         name = token.value.upcase
         match(T_SPACE)
+        mailbox = astring
         data = []
         token = lookahead
         if token.symbol == T_SPACE
@@ -2821,8 +2822,7 @@ module Net
             user = astring
             match(T_SPACE)
             rights = astring
-            ##XXX data.push([user, rights])
-            data.push(MailboxACLItem.new(user, rights))
+            data.push(MailboxACLItem.new(user, rights, mailbox))
           end
         end
         return UntaggedResponse.new(name, data, @str)
diff --git a/test/net/imap/test_imap_response_parser.rb b/test/net/imap/test_imap_response_parser.rb
index 4062e1b9e7..c329f4285f 100644
--- a/test/net/imap/test_imap_response_parser.rb
+++ b/test/net/imap/test_imap_response_parser.rb
@@ -223,4 +223,18 @@ EOF
     assert_equal("7BIT", delivery_status.encoding)
     assert_equal(410, delivery_status.size)
   end
+
+  # [Bug #8281]
+  def test_acl
+    parser = Net::IMAP::ResponseParser.new
+    response = parser.parse(<<EOF.gsub(/\n/, "\r\n").taint)
+* ACL "INBOX/share" "imshare2copy1366146467@xxxxxxxxxxxxxxxxxx.com" lrswickxteda
+EOF
+    assert_equal("ACL", response.name)
+    assert_equal(1, response.data.length)
+    assert_equal("INBOX/share", response.data[0].mailbox)
+    assert_equal("imshare2copy1366146467@xxxxxxxxxxxxxxxxxx.com",
+                 response.data[0].user)
+    assert_equal("lrswickxteda", response.data[0].rights)
+  end
 end