diff --git a/include/libxml/parser.h b/include/libxml/parser.h
index b6d6fcf6..508f37e8 100644
--- a/include/libxml/parser.h
+++ b/include/libxml/parser.h
@@ -100,7 +100,7 @@ typedef void (* xmlParserInputDeallocate)(xmlChar *str);
  */
 struct _xmlParserInput {
     /* Input buffer */
-    xmlParserInputBuffer *buf;
+    xmlParserInputBuffer *buf XML_DEPRECATED_MEMBER;
     /**
      * @deprecated Use #xmlCtxtGetInputPosition
      *
diff --git a/include/libxml/xmlIO.h b/include/libxml/xmlIO.h
index 898f7ae7..6ebd6381 100644
--- a/include/libxml/xmlIO.h
+++ b/include/libxml/xmlIO.h
@@ -124,17 +124,22 @@ typedef xmlOutputBuffer *
  * be removed from the public interface.
  */
 struct _xmlParserInputBuffer {
-    void*                  context;
-    xmlInputReadCallback   readcallback;
-    xmlInputCloseCallback  closecallback;
+    void*                  context XML_DEPRECATED_MEMBER;
+    xmlInputReadCallback   readcallback XML_DEPRECATED_MEMBER;
+    xmlInputCloseCallback  closecallback XML_DEPRECATED_MEMBER;
 
-    xmlCharEncodingHandler *encoder; /* I18N conversions to UTF-8 */
+    /* I18N conversions to UTF-8 */
+    xmlCharEncodingHandler *encoder XML_DEPRECATED_MEMBER;
 
-    xmlBuf *buffer;    /* Local buffer encoded in UTF-8 */
-    xmlBuf *raw;       /* if encoder != NULL buffer for raw input */
-    int	compressed;	    /* -1=unknown, 0=not compressed, 1=compressed */
-    int error;
-    unsigned long rawconsumed;/* amount consumed from raw */
+    /* Local buffer encoded in UTF-8 */
+    xmlBuf *buffer XML_DEPRECATED_MEMBER;
+    /* if encoder != NULL buffer for raw input */
+    xmlBuf *raw XML_DEPRECATED_MEMBER;
+    /* -1=unknown, 0=not compressed, 1=compressed */
+    int	compressed XML_DEPRECATED_MEMBER;
+    int error XML_DEPRECATED_MEMBER;
+    /* amount consumed from raw */
+    unsigned long rawconsumed XML_DEPRECATED_MEMBER;
 };