diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
index 5e728ac51b..a358f68f7e 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
@@ -301,7 +301,12 @@
                   <td>[% numberpattern.displayorder | html %]</td>
                   <td class="actions">
                     <a class="btn btn-default btn-xs" href="/cgi-bin/koha/serials/subscription-numberpatterns.pl?op=modify&id=[% numberpattern.id | html %]"><i class="fa-solid fa-pencil" aria-hidden="true"></i> Edit</a>
-                    <a class="delete_pattern btn btn-default btn-xs" href="/cgi-bin/koha/serials/subscription-numberpatterns.pl?op=del&id=[% numberpattern.id | html %]"><i class="fa fa-trash-can"></i> Delete</a>
+                    <form action="/cgi-bin/koha/serials/subscription-numberpatterns.pl" method="post">
+                        [% INCLUDE 'csrf-token.inc' %]
+                        <input type="hidden" name="op" value="cud-del" />
+                        <input type="hidden" name="id" value="[% numberpattern.id | html %]" />
+                        <button class="delete_pattern btn btn-default btn-xs"><i class="fa fa-trash-can"></i> Delete</button>
+                    </form>
                   </td>
                 </tr>
               [% END %]
diff --git a/serials/subscription-numberpatterns.pl b/serials/subscription-numberpatterns.pl
index 1c38537b32..4b931edae8 100755
--- a/serials/subscription-numberpatterns.pl
+++ b/serials/subscription-numberpatterns.pl
@@ -102,8 +102,8 @@ if($op && $op eq 'cud-savenew') {
     }
 }
 
-if($op && ($op eq 'new' || $op eq 'cud-modify')) {
-    if($op eq 'cud-modify') {
+if($op && ($op eq 'new' || $op eq 'modify')) {
+    if($op eq 'modify') {
         my $id = $input->param('id');
         if(defined $id) {
             my $numberpattern = GetSubscriptionNumberpattern($id);