diff --git a/Build.nix b/Build.nix
index 098a0b0..87611ba 100755
--- a/Build.nix
+++ b/Build.nix
@@ -84,6 +84,7 @@ chmod +x $WORK/var/lib/MailScanner/wrapper/*-wrapper
 chmod +x $WORK/var/lib/MailScanner/init/*
 
 # Build the MailScanner-version.tar.gz archive
+cd /tmp
 tar czf ~/msbuilds/tar/MailScanner-${VERSION}.nix.tar.gz MailScanner-$MSVERSION
 
 cd $DEVBASEDIR