diff --git a/etc/libemb.pl b/etc/libemb.pl
index 0ffce9ef..1f397915 100755
--- a/etc/libemb.pl
+++ b/etc/libemb.pl
@@ -1,6 +1,8 @@
 #!/usr/bin/perl
 
-@files = (
+use strict;
+
+my @files = (
     'piclib/built-in.scm',
     'piclib/srfi/1.scm',
     'piclib/srfi/26.scm',