--- config.h.in.orig	Tue May 11 21:14:07 1999
+++ config.h.in	Wed Jun 23 15:13:01 1999
@@ -69,7 +69,7 @@
 #define XZX_PLUS3
 
 /* Define this for Pentagon emulation support. */
-#define XZX_PENTAGON
+#undef XZX_PENTAGON
 
 /* Define this for Scorpion emulation support. */
 #undef XZX_SCORPION