--- JSON-XS/XS.xs	2007/06/12 01:27:02	1.40
+++ JSON-XS/XS.xs	2007/06/23 22:53:16	1.41
@@ -11,6 +11,12 @@
 # define snprintf _snprintf // C compilers have this in stdio.h
 #endif
 
+// some old perls do not have this, try to make it work, no
+// guarentees, though.
+#ifndef UTF8_MAXBYTES
+# define UTF8_MAXBYTES 13
+#endif
+
 #define F_ASCII        0x00000001UL
 #define F_LATIN1       0x00000002UL
 #define F_UTF8         0x00000004UL