diff --git a/scripts/randdisable b/scripts/randdisable
index f8a7a147ed..1ccaf6f10d 100755
--- a/scripts/randdisable
+++ b/scripts/randdisable
@@ -20,8 +20,13 @@
 # - edit the @tls array to include all TLS backends you can build with
 # - do a checkout in a ram-based filesystem
 #
+use strict;
+use warnings;
+
 use List::Util qw/shuffle/;
 
+my @disable;
+
 sub getoptions {
     my @all = `./configure --help`;
     for my $o (@all) {