--- a/check_email_delivery/src/check_email_delivery
+++ b/check_email_delivery/src/check_email_delivery
@@ -1,4 +1,6 @@
 #!/usr/bin/perl
+# nagios: -epn
+
 use strict;
 my $VERSION = '0.7.1';
 my $COPYRIGHT = 'Copyright (C) 2005-2011 Jonathan Buhacoff <jonathan@buhacoff.net>';
--- a/check_email_delivery/src/check_imap_quota
+++ b/check_email_delivery/src/check_imap_quota
@@ -1,4 +1,6 @@
 #!/usr/bin/perl
+# nagios: -epn
+
 use strict;
 my $VERSION = '0.2';
 my $COPYRIGHT = 'Copyright (C) 2005-2011 Jonathan Buhacoff <jonathan@buhacoff.net>';
--- a/check_email_delivery/src/check_imap_receive
+++ b/check_email_delivery/src/check_imap_receive
@@ -1,4 +1,6 @@
 #!/usr/bin/perl
+# nagios: -epn
+
 use strict;
 my $VERSION = '0.7.5';
 my $COPYRIGHT = 'Copyright (C) 2005-2011 Jonathan Buhacoff <jonathan@buhacoff.net>';
--- a/check_email_delivery/src/check_smtp_send
+++ b/check_email_delivery/src/check_smtp_send
@@ -1,4 +1,6 @@
 #!/usr/bin/perl
+# nagios: -epn
+
 use strict;
 use POSIX qw(strftime);
 my $VERSION = '0.7.3';
--- a/check_email_delivery/src/imap_ssl_cert
+++ b/check_email_delivery/src/imap_ssl_cert
@@ -1,4 +1,6 @@
 #!/usr/bin/perl
+# nagios: -epn
+
 use strict;
 my $VERSION = '0.1';
 my $COPYRIGHT = 'Copyright (C) 2005-2011 Jonathan Buhacoff <jonathan@buhacoff.net>';