diff --git a/configs/demo9s12ne64/include/board.h b/configs/demo9s12ne64/include/board.h
index d4c30013c66..9420b67ddb3 100755
--- a/configs/demo9s12ne64/include/board.h
+++ b/configs/demo9s12ne64/include/board.h
@@ -52,6 +52,7 @@
 
 /* Clocking *************************************************************************/
 
+#define HCS12_OSCCLK      16000000 /* 16MHz */
 
 /* LED definitions ******************************************************************/