--- chars.h.~1.11.4.4.~	2004-04-25 09:25:32.000000000 +1000
+++ chars.h	2005-03-26 07:36:06.574079280 +1100
@@ -51,7 +51,7 @@
  */
 #define SCM_CHARP(x) (SCM_ITAG8(x) == scm_tc8_char)
 #define SCM_CHAR(x) ((unsigned int)SCM_ITAG8_DATA(x))
-#define SCM_MAKE_CHAR(x) SCM_MAKE_ITAG8((scm_t_bits) x, scm_tc8_char)
+#define SCM_MAKE_CHAR(x) SCM_MAKE_ITAG8((scm_t_bits) (unsigned char) (x), scm_tc8_char)