diff --git a/texk/xdvik/encodings.c b/texk/xdvik/encodings.c
index 0ab1729..f9a5ac2 100644
--- a/texk/xdvik/encodings.c
+++ b/texk/xdvik/encodings.c
@@ -3056,7 +3056,7 @@ cjk2unicode(unsigned char *cjk)
 	register_exit_handler(close_iconv, NULL);
 	
     }
-    if (iconv(m_iconv_gb_ucs4, (iconv_char_pptrT)&from_ptr, &from, &to_ptr, &to) == (size_t)(-1)) {
+    if (iconv(m_iconv_gb_ucs4, (const char**)&from_ptr, &from, &to_ptr, &to) == (size_t)(-1)) {
 	XDVI_ERROR((stderr, "cjk2unicode: can't convert GBK to unicode: %s", strerror(errno)));
 	return 0;
     }
diff --git a/texk/xdvik/util.c b/texk/xdvik/util.c
index 07be4a5..1321e85 100644
--- a/texk/xdvik/util.c
+++ b/texk/xdvik/util.c
@@ -1858,7 +1858,7 @@ iconv_convert_string(const char *from_enc, const char *to_enc, const char *str)
     }
 
     TRACE_FIND((stderr, "iconv_convert_string: from `%s', to `%s'", from_enc, to_enc));
-    if (iconv(conv_desc, (iconv_char_pptrT)&in_ptr, &input_len, (char **)&out_ptr, &conv_len) == (size_t)(-1)) {
+    if (iconv(conv_desc, (const char **)&in_ptr, &input_len, (char **)&out_ptr, &conv_len) == (size_t)(-1)) {
 	popup_message(XtNameToWidget(globals.widgets.top_level, "*find_popup"),
 		      MSG_ERR,
 		      NULL,