diff --git a/assemble-firmware.pl b/assemble-firmware.pl
index 1e7350c..2f02c23 100755
--- a/assemble-firmware.pl
+++ b/assemble-firmware.pl
@@ -1,6 +1,8 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 
 use strict;
+use warnings;
+
 use File::Basename;
 use File::Path;