diff --git a/feedgen/entry.py b/feedgen/entry.py
index 66400ba..7b9fd3b 100644
--- a/feedgen/entry.py
+++ b/feedgen/entry.py
@@ -54,7 +54,7 @@ def _add_text_elm(entry, data, name):
             )
     # Add type description of the content
     if type_:
-        elm.attrib['type'] = type_
+        elm.attrib['type'] = 'html' if type_ == 'CDATA' else type_
 
 
 class FeedEntry(object):
diff --git a/tests/test_entry.py b/tests/test_entry.py
index 5eaeffa..113f53a 100644
--- a/tests/test_entry.py
+++ b/tests/test_entry.py
@@ -163,7 +163,7 @@ def test_content_cdata_type(self):
         fe.title('some title')
         fe.content('content', type='CDATA')
         result = fg.atom_str()
-        assert b'<content type="CDATA"><![CDATA[content]]></content>' in result
+        assert b'<content type="html"><![CDATA[content]]></content>' in result
 
     def test_summary_html_type(self):
         fg = FeedGenerator()