diff --git a/build.sh b/build.sh
old mode 100644
new mode 100755
index 30750c0..07810a1
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 asciidoctor book.adoc
 asciidoctor-pdf book.adoc
-cp book.html ../misp-website/best-practices-in-threat-intelligence.html
-cp book.pdf  ../misp-website/best-practices-in-threat-intelligence.pdf
+[[ -d ../misp-website ]] && cp book.html ../misp-website/best-practices-in-threat-intelligence.html
+[[ -d ../misp-website ]] && cp book.pdf  ../misp-website/best-practices-in-threat-intelligence.pdf