diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/inventory.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/inventory.tt
index 60c4c8e4ac..e134c1291c 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/inventory.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/inventory.tt
@@ -487,7 +487,7 @@
                 $("input:checked").each(function() {
                     param += "|" + $(this).attr('name');
                 });
-                $.post('/cgi-bin/koha/tools/ajax-inventory.pl', { seen: param });
+                $.post('/cgi-bin/koha/tools/ajax-inventory.pl', { seen: param, op: 'cud-seen', csrf_token: $('meta[name="csrf-token"]').attr("content") });
                 inventorydt.fnPageChange( 'next' );
                 return false;
             });
@@ -500,7 +500,7 @@
                 $.ajax({
                   type: 'POST',
                   url: '/cgi-bin/koha/tools/ajax-inventory.pl',
-                  data: { seen: param},
+                  data: { seen: param, op: 'cud-seen', csrf_token: $('meta[name="csrf-token"]').attr("content") },
                   async: false
                 });
                 document.location.href = '/cgi-bin/koha/tools/inventory.pl';
diff --git a/tools/ajax-inventory.pl b/tools/ajax-inventory.pl
index a8c8c9d06d..7d35497a76 100755
--- a/tools/ajax-inventory.pl
+++ b/tools/ajax-inventory.pl
@@ -11,13 +11,16 @@ my $input = CGI->new;
 my ($status, $cookie, $sessionId) = C4::Auth::check_api_auth($input, { tools => 'inventory' });
 exit unless ($status eq "ok");
 
+my $op = $input->param('op') // q{};
 
-my $seen = $input->param('seen');
-my @seent = split(/\|/, $seen);
+if ( $op eq 'cud-seen' ) {
+    my $seen  = $input->param('seen');
+    my @seent = split( /\|/, $seen );
 
-# mark seen if applicable (ie: coming form mark seen checkboxes)
-foreach ( @seent ) {
-    /SEEN-(.+)/ and &ModDateLastSeen($1);
+    # mark seen if applicable (ie: coming form mark seen checkboxes)
+    foreach (@seent) {
+        /SEEN-(.+)/ and &ModDateLastSeen($1);
+    }
 }
 
 print $input->header('application/json');