diff --git a/linkcheck/checker/const.py b/linkcheck/checker/const.py
index a46a030d..28019d93 100644
--- a/linkcheck/checker/const.py
+++ b/linkcheck/checker/const.py
@@ -139,6 +139,7 @@ PARSE_EXTENSIONS = {
 
 PARSE_MIMETYPES = (
     "text/html",
+    "application/xhtml+xml",
     "text/css",
     "application/x-shockwave-flash",
 )
diff --git a/linkcheck/checker/httpurl.py b/linkcheck/checker/httpurl.py
index 73d75e14..af2631f2 100644
--- a/linkcheck/checker/httpurl.py
+++ b/linkcheck/checker/httpurl.py
@@ -606,7 +606,7 @@ Use URL %(newurl)s instead for checking.""") % {
         """
         if not (self.valid and self.headers):
             return False
-        if headers.get_content_type(self.headers) != "text/html":
+        if headers.get_content_type(self.headers) not in ("text/html", "application/xhtml+xml"):
             return False
         return self.encoding_supported()