diff --git a/Build.sh b/Build.sh
index 74711e8..6084542 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.554 2012/05/04 21:28:06 tg Exp $'
+srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.555 2012/05/04 21:30:06 tg Exp $'
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012
@@ -1398,7 +1398,7 @@ else
 		#define EXTERN
 		#define MKSH_INCLUDES_ONLY
 		#include "sh.h"
-		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.554 2012/05/04 21:28:06 tg Exp $");
+		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.555 2012/05/04 21:30:06 tg Exp $");
 		int main(void) { printf("Hello, World!\n"); return (0); }
 EOF
 	case $cm in
@@ -1780,7 +1780,7 @@ mksh_cfg= NSIG
 ;' >conftest.c
 	# GNU sed 2.03 segfaults when optimising this to sed -n
 	NSIG=`vq "$CPP $CFLAGS $CPPFLAGS $NOWARN conftest.c" | \
-	    grep '^mksh_cfg *=[	 ]*\([0-9x ()+-]*\).*$' | \
+	    grep '^mksh_cfg *=[	 ]*[0-9x ()+-]*.*$' | \
 	    sed 's/^mksh_cfg *=[	 ]*\([0-9x ()+-]*\).*$/\1/'`
 	case $NSIG in
 	*[\ \(\)+-]*) NSIG=`"$AWK" "BEGIN { print $NSIG }"` ;;
@@ -1808,7 +1808,7 @@ mksh_cfg= NSIG
 		echo ';' >>conftest.c
 		# GNU sed 2.03 croaks on optimising this, too
 		vq "$CPP $CFLAGS $CPPFLAGS $NOWARN conftest.c" | \
-		    grep '^mksh_cfg *=[	 ]*\([0-9x]*\).*$' | \
+		    grep '^mksh_cfg *=[	 ]*[0-9x]*.*$' | \
 		    sed 's/^mksh_cfg *=[	 ]*\([0-9x]*\).*$/\1:'$name/
 	done | sed -e '/^:/d' -e 's/:/ /g' | while read nr name; do
 		test $printf = echo || nr=`printf %d "$nr" 2>/dev/null`