diff --git a/Source/HBIOS/Build.sh b/Source/HBIOS/Build.sh
index d2e15463..8024b197 100755
--- a/Source/HBIOS/Build.sh
+++ b/Source/HBIOS/Build.sh
@@ -66,7 +66,8 @@ 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 $romsize - 128` 2>/dev/null
-LC_CTYPE=en_US.US-ASCII tr '\000' '\345' </dev/zero | dd of=$blankfile bs=1024 count=`expr $romsize - 128` 2>/dev/null
+#LC_CTYPE=en_US.US-ASCII tr '\000' '\345' </dev/zero | dd of=$blankfile bs=1024 count=`expr $romsize - 128` 2>/dev/null
+LC_ALL=en_US.US-ASCII tr '\000' '\345' </dev/zero | dd of=$blankfile bs=1024 count=`expr $romsize - 128` 2>/dev/null
 
 cat <<- EOF > build.inc
 ; RomWBW Configured for $platform $config $timestamp