--- a/lib/Nagios/Check/DNS/check_tlsa_record.pm	Tue Jun 21 16:07:28 2016 +0200
+++ b/lib/Nagios/Check/DNS/check_tlsa_record.pm	Tue Jun 21 16:14:34 2016 +0200
@@ -18,7 +18,7 @@
 my $with_cname   = '^(?<cname>[_a-z]+.*\n).*';
 
 our $tmpfile = File::Temp->new();
-my $fdname = "/dev/fd/' . fileno $tmpfile;
+my $fdname = '/dev/fd/' . fileno $tmpfile;
 fcntl($tmpfile, F_SETFD, fcntl($tmpfile, F_GETFD, 0) & ~FD_CLOEXEC)
     or die "clear FD_CLOEXEC on $tmpfile: $!\n";