diff --git a/include/libxml/parser.h b/include/libxml/parser.h
index a7dddb36..a42e7e83 100644
--- a/include/libxml/parser.h
+++ b/include/libxml/parser.h
@@ -850,7 +850,7 @@ XMLPUBFUN int XMLCALL
  * Recovery mode 
  */
 XMLPUBFUN xmlDocPtr XMLCALL	
-		xmlRecoverDoc		(xmlChar *cur);
+		xmlRecoverDoc		(const xmlChar *cur);
 XMLPUBFUN xmlDocPtr XMLCALL	
 		xmlRecoverMemory	(const char *buffer,
 					 int size);
diff --git a/parser.c b/parser.c
index bd2be675..47fbfa55 100644
--- a/parser.c
+++ b/parser.c
@@ -13406,7 +13406,7 @@ xmlSAXParseFile(xmlSAXHandlerPtr sax, const char *filename,
  */
 
 xmlDocPtr
-xmlRecoverDoc(xmlChar *cur) {
+xmlRecoverDoc(const xmlChar *cur) {
     return(xmlSAXParseDoc(NULL, cur, 1));
 }