diff --git a/Koha/File/Transport/FTP.pm b/Koha/File/Transport/FTP.pm
index 5600bd4db8..e6ad0c49d3 100644
--- a/Koha/File/Transport/FTP.pm
+++ b/Koha/File/Transport/FTP.pm
@@ -232,7 +232,9 @@ sub _list_files {
             my $size = $self->{connection}->size($name);
             push @file_list, {
                 filename => $name,
+                longname => undef,
                 size     => $size,
+                perms    => undef,
                 mtime    => $self->{connection}->mdtm($name),
                 type     => defined $size ? 'file' : 'directory',
             };
diff --git a/t/db_dependent/Koha/File/Transport/FTP.t b/t/db_dependent/Koha/File/Transport/FTP.t
index e781a2f8e3..b1bdc19b91 100755
--- a/t/db_dependent/Koha/File/Transport/FTP.t
+++ b/t/db_dependent/Koha/File/Transport/FTP.t
@@ -211,7 +211,7 @@ subtest 'list_files() MLSD tests' => sub {
 };
 
 subtest 'list_files() NLST fallback tests' => sub {
-    plan tests => 10;
+    plan tests => 11;
 
     $schema->storage->txn_begin;
 
@@ -277,6 +277,11 @@ subtest 'list_files() NLST fallback tests' => sub {
     is( $subdir->{type},  'directory', 'SIZE failing is treated as a directory' );
     is( $subdir->{perms}, undef,       'perms stay undef on the NLST fallback path' );
 
+    ok(
+        exists( $quote->{longname} ) && exists( $quote->{perms} ),
+        'longname and perms keys are present (as undef) on the NLST fallback path, matching the MLSD/SFTP/Local shape'
+    );
+
     $transport->{connection} = undef;
 
     $schema->storage->txn_rollback;