diff --git a/include/libxml/xmlIO.h b/include/libxml/xmlIO.h
index eea9ed6c..c899f5be 100644
--- a/include/libxml/xmlIO.h
+++ b/include/libxml/xmlIO.h
@@ -129,8 +129,8 @@ struct _xmlParserInputBuffer {
     
     xmlCharEncodingHandlerPtr encoder; /* I18N conversions to UTF-8 */
     
-    xmlBufferPtr buffer;    /* Local buffer encoded in UTF-8 */
-    xmlBufferPtr raw;       /* if encoder != NULL buffer for raw input */
+    xmlBufPtr buffer;    /* Local buffer encoded in UTF-8 */
+    xmlBufPtr 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 */
@@ -145,8 +145,8 @@ struct _xmlOutputBuffer {
     
     xmlCharEncodingHandlerPtr encoder; /* I18N conversions to UTF-8 */
     
-    xmlBufferPtr buffer;    /* Local buffer encoded in UTF-8 or ISOLatin */
-    xmlBufferPtr conv;      /* if encoder != NULL buffer for output */
+    xmlBufPtr buffer;    /* Local buffer encoded in UTF-8 or ISOLatin */
+    xmlBufPtr conv;      /* if encoder != NULL buffer for output */
     int written;            /* total number of byte written */
     int error;
 };