--- simulavr-1.0.0/examples/atmel_key/StdDefs.c.orig	2012-02-12 07:26:38.000000000 -0800
+++ simulavr-1.0.0/examples/atmel_key/StdDefs.c	2015-11-07 19:36:29.556629000 -0800
@@ -55,6 +55,7 @@
    }
 
 // Delay in 1/10's of a millisecond
+#ifdef notdef
 void msleep(INT16U ms)
     { /* This loop does not work with optimization != 0. Therefore we use
          avr-libc _delay routines K. Schwichtenberg
@@ -63,7 +64,7 @@
 		for (j = 1; j < ONETENTH_MS; j++); / * to give 1/10 ms*/
         _delay_ms(ms); // Changed K. Schwichtenberg
     }
-
+#endif
 //------------------------------------------------------------
 // void putBCD(INT16S X, CHARU length, CHARU TrailingSpace)
 //