Release of libxml-1.1, Daniel.
diff --git a/encoding.c b/encoding.c
index a7e984e..a9a5fa7 100644
--- a/encoding.c
+++ b/encoding.c
@@ -216,7 +216,7 @@
  * Returns one of the XML_CHAR_ENCODING_... values.
  */
 xmlCharEncoding
-xmlDetectCharEncoding(unsigned char* in)
+xmlDetectCharEncoding(const unsigned char* in)
 {
     if ((in[0] == 0x00) && (in[1] == 0x00) &&
         (in[2] == 0x00) && (in[3] == 0x3C))
@@ -255,7 +255,7 @@
  * if not recognized.
  */
 xmlCharEncoding
-xmlParseCharEncoding(char* name)
+xmlParseCharEncoding(const char* name)
 {
     char upper[500];
     int i;