--- a/check_cert.pl	Mon Jan 07 12:43:56 2019 +0100
+++ b/check_cert.pl	Mon Jan 07 13:00:25 2019 +0100
@@ -142,7 +142,7 @@
 # check expire date
 foreach ( sort keys %certs ) {
     my $enddate;
-    if ( @{ $certs{$_} }[1] =~ /(\w+\s+\d+\s+\d+:\d+:\d+\s+\d+)/ ) {
+    if ( @{ $certs{$_} }[1] =~ /(\w+\s+\d+\s+\d+:\d+:\d+\s+\d+\s+(\w+)?)/ ) {
         $enddate = $1;
     }
     $enddate = ParseDate($enddate);