diff --git a/doc/changelog.txt b/doc/changelog.txt
index e99fbeae..88cd5a1e 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -1,5 +1,8 @@
 6.6 "" (released xx.xx.2011)
 
+Changes:
+- logging: Add warning tag attribute in XML loggers.
+
 
 6.5 "The Abyss" (released 13.3.2011)
 
diff --git a/linkcheck/checker/urlbase.py b/linkcheck/checker/urlbase.py
index 435b4719..672cc370 100644
--- a/linkcheck/checker/urlbase.py
+++ b/linkcheck/checker/urlbase.py
@@ -1083,7 +1083,7 @@ class UrlBase (object):
           Indicates if URL data has been loaded from cache.
         - url_data.result: unicode
           Result string
-        - url_data.warnings: list of unicode
+        - url_data.warnings: list of tuples (tag, warning message)
           List of tagged warnings for this URL.
         - url_data.name: unicode string or None
           name of URL (eg. filename or link name)
@@ -1116,7 +1116,7 @@ class UrlBase (object):
           extern=self.extern[0],
           cached=self.cached,
           result=self.result,
-          warnings=[x[1] for x in self.warnings],
+          warnings=self.warnings[:],
           name=self.name or u"",
           title=self.get_title(),
           parent_url=self.parent_url or u"",
diff --git a/linkcheck/logger/csvlog.py b/linkcheck/logger/csvlog.py
index 355cbec4..1e049710 100644
--- a/linkcheck/logger/csvlog.py
+++ b/linkcheck/logger/csvlog.py
@@ -88,7 +88,7 @@ class CSVLogger (Logger):
         for s in (url_data.base_url,
                url_data.parent_url, url_data.base_ref,
                url_data.result,
-               self.linesep.join(url_data.warnings),
+               self.linesep.join(x[1] for x in url_data.warnings),
                self.linesep.join(url_data.info),
                url_data.valid, url_data.url,
                url_data.line, url_data.column,
diff --git a/linkcheck/logger/customxml.py b/linkcheck/logger/customxml.py
index e94ef9f0..7e621892 100644
--- a/linkcheck/logger/customxml.py
+++ b/linkcheck/logger/customxml.py
@@ -71,8 +71,9 @@ class CustomXMLLogger (xmllog.XMLLogger):
             self.xml_endtag(u"infos")
         if url_data.warnings and self.has_part('warning'):
             self.xml_starttag(u"warnings")
-            for data in url_data.warnings:
-                self.xml_tag(u"warning", data)
+            for tag, data in url_data.warnings:
+                attrs = {"tag": tag}
+                self.xml_tag(u"warning", data, attrs)
             self.xml_endtag(u"warnings")
         if self.has_part("result"):
             attrs = {}
diff --git a/linkcheck/logger/html.py b/linkcheck/logger/html.py
index bd03d44d..32de3815 100644
--- a/linkcheck/logger/html.py
+++ b/linkcheck/logger/html.py
@@ -220,7 +220,7 @@ class HtmlLogger (Logger):
     def write_warning (self, url_data):
         """Write url_data.warnings."""
         sep = u"<br>"+os.linesep
-        text = sep.join(cgi.escape(x) for x in url_data.warnings)
+        text = sep.join(cgi.escape(x[1]) for x in url_data.warnings)
         self.writeln(u'<tr><td bgcolor="' + self.colorwarning + u'" '+
                      u'valign="top">' + self.part("warning") +
                      u'</td><td bgcolor="' + self.colorwarning + u'">' +
diff --git a/linkcheck/logger/sql.py b/linkcheck/logger/sql.py
index f200bcce..2ef15e53 100644
--- a/linkcheck/logger/sql.py
+++ b/linkcheck/logger/sql.py
@@ -106,7 +106,7 @@ class SQLLogger (Logger):
                'base_ref': sqlify((url_data.base_ref)),
                'valid': intify(url_data.valid),
                'result': sqlify(url_data.result),
-               'warning': sqlify(os.linesep.join(url_data.warnings)),
+               'warning': sqlify(os.linesep.join(x[1] for x in url_data.warnings)),
                'info': sqlify(os.linesep.join(url_data.info)),
                'url': sqlify(urlutil.url_quote(url_data.url)),
                'line': url_data.line,
diff --git a/linkcheck/logger/text.py b/linkcheck/logger/text.py
index 4e02c7bd..a635be64 100644
--- a/linkcheck/logger/text.py
+++ b/linkcheck/logger/text.py
@@ -175,7 +175,8 @@ class TextLogger (Logger):
     def write_warning (self, url_data):
         """Write url_data.warning."""
         self.write(self.part("warning") + self.spaces("warning"))
-        self.writeln(self.wrap(url_data.warnings, 65), color=self.colorwarning)
+        warning_msgs = [x[1] for x in url_data.warnings]
+        self.writeln(self.wrap(warning_msgs, 65), color=self.colorwarning)
 
     def write_result (self, url_data):
         """Write url_data.result."""
diff --git a/tests/checker/__init__.py b/tests/checker/__init__.py
index 0b8a8cf6..fde50b00 100644
--- a/tests/checker/__init__.py
+++ b/tests/checker/__init__.py
@@ -79,7 +79,7 @@ class TestLogger (linkcheck.logger.Logger):
                    "is located in" not in info:
                     self.result.append(u"info %s" % info)
         if self.has_part('warning'):
-            for warning in url_data.warnings:
+            for tag, warning in url_data.warnings:
                 self.result.append(u"warning %s" % warning)
         if self.has_part('result'):
             self.result.append(u"valid" if url_data.valid else u"error")