--- zaptel-1.4.5.1/zconfig.h.orig	2007-09-22 13:58:00.705639753 -0400
+++ zaptel-1.4.5.1/zconfig.h	2007-09-22 14:01:16.039840297 -0400
@@ -50,7 +50,7 @@
  * processors and can cause system instability!
  * 
  */
-/* #define CONFIG_ZAPTEL_MMX */
+#define CONFIG_ZAPTEL_MMX
 
 /** If defined: the user must define exactly one ECHO_CAN_ var: */
 #ifndef ECHO_CAN_FROMENV