diff --git a/HTMLparser.c b/HTMLparser.c
index bc4a6188..f62ef9d2 100644
--- a/HTMLparser.c
+++ b/HTMLparser.c
@@ -1454,6 +1454,8 @@ htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
  * @name:  The tag name
  * @elem:  the HTML element
  *
+ * DEPRECATED: Internal function, don't use.
+ *
  * The HTML DTD allows a tag to implicitly close other tags.
  * The list is kept in htmlStartClose array. This function checks
  * if the element or one of it's children would autoclose the
@@ -1481,6 +1483,8 @@ htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) {
  * @doc:  the HTML document
  * @elem:  the HTML element
  *
+ * DEPRECATED: Internal function, don't use.
+ *
  * The HTML DTD allows a tag to implicitly close other tags.
  * The list is kept in htmlStartClose array. This function checks
  * if a tag is autoclosed by one of it's child
diff --git a/include/libxml/HTMLparser.h b/include/libxml/HTMLparser.h
index 0900a2b8..116b0cf1 100644
--- a/include/libxml/HTMLparser.h
+++ b/include/libxml/HTMLparser.h
@@ -96,9 +96,11 @@ XMLPUBFUN const htmlEntityDesc *
 XMLPUBFUN const htmlEntityDesc *
 			htmlEntityValueLookup(unsigned int value);
 
+XML_DEPRECATED
 XMLPUBFUN int
 			htmlIsAutoClosed(htmlDocPtr doc,
 					 htmlNodePtr elem);
+XML_DEPRECATED
 XMLPUBFUN int
 			htmlAutoCloseTag(htmlDocPtr doc,
 					 const xmlChar *name,
diff --git a/python/generator.py b/python/generator.py
index b54e16e3..2d329207 100755
--- a/python/generator.py
+++ b/python/generator.py
@@ -290,9 +290,11 @@ skip_impl = (
 )
 
 deprecated_funcs = {
+    'htmlAutoCloseTag': True,
     'htmlDefaultSAXHandlerInit': True,
     'htmlHandleOmittedElem': True,
     'htmlInitAutoClose': True,
+    'htmlIsAutoClosed': True,
     'htmlParseCharRef': True,
     'htmlParseElement': True,
     'namePop': True,