diff --git a/Source/HBIOS/Build.sh b/Source/HBIOS/Build.sh
index 86f8c05a..e9ff4abd 100755
--- a/Source/HBIOS/Build.sh
+++ b/Source/HBIOS/Build.sh
@@ -65,7 +65,7 @@ romfmt=wbw_rom${romsize}
 outdir=../../Binary
 
 echo "creating empty rom disk of size $romsize in $blankfile"
-LANG=en_US.US-ASCII tr '\000' '\345' </dev/zero | dd of=$blankfile bs=1024 count=`expr $romsize - 128`
+LC_CTYPE=en_US.US-ASCII tr '\000' '\345' </dev/zero | dd of=$blankfile bs=1024 count=`expr $romsize - 128`
 
 cat <<- EOF > build.inc
 ; RomWBW Configured for $platform $config $timestamp
diff --git a/Source/ver.inc b/Source/ver.inc
index 000b172a..2fc8980c 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1-pre.6"
+#DEFINE BIOSVER	"3.1-pre.7"
diff --git a/Source/ver.lib b/Source/ver.lib
index ec372ea7..575efc46 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.1-pre.6"
+	db	"3.1-pre.7"
 	endm