diff --git a/Build.sh b/Build.sh
index 29ee1c6..f754958 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.594 2012/12/01 01:36:16 tg Exp $'
+srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.595 2012/12/01 14:22:09 tg Exp $'
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012
@@ -1481,7 +1481,7 @@ else
 		#define EXTERN
 		#define MKSH_INCLUDES_ONLY
 		#include "sh.h"
-		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.594 2012/12/01 01:36:16 tg Exp $");
+		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.595 2012/12/01 14:22:09 tg Exp $");
 		int main(void) { printf("Hello, World!\n"); return (0); }
 EOF
 	case $cm in
@@ -1983,6 +1983,7 @@ mksh_cfg= NSIG
 	esac
 	printf=printf
 	(printf hallo) >/dev/null 2>&1 || printf=echo
+	test $printf = echo || test "`printf %d 42`" = 42 || printf=echo
 	test $printf = echo || NSIG=`printf %d "$NSIG" 2>/dev/null`
 	$printf "NSIG=$NSIG ... "
 	sigs="INT SEGV ABRT KILL ALRM BUS CHLD CLD CONT DIL EMT FPE HUP ILL"