diff --git a/config/sql/se/Contributors.sql b/config/sql/se/Contributors.sql
index 532974b8..76e7e4bb 100644
--- a/config/sql/se/Contributors.sql
+++ b/config/sql/se/Contributors.sql
@@ -1,5 +1,4 @@
 CREATE TABLE `Contributors` (
-  `ContributorId` int(10) unsigned NOT NULL AUTO_INCREMENT,
   `EbookId` int(10) unsigned NOT NULL,
   `Name` varchar(255) NOT NULL,
   `UrlName` varchar(255) NOT NULL,
@@ -9,7 +8,6 @@ CREATE TABLE `Contributors` (
   `FullName` varchar(255) NULL,
   `NacoafUrl` varchar(255) NULL,
   `SortOrder` tinyint(3) unsigned NOT NULL,
-  PRIMARY KEY (`ContributorId`),
   KEY `index1` (`EbookId`),
   KEY `index2` (`UrlName`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
diff --git a/lib/Contributor.php b/lib/Contributor.php
index 244f73d7..13d3f628 100644
--- a/lib/Contributor.php
+++ b/lib/Contributor.php
@@ -5,7 +5,6 @@ use Safe\DateTimeImmutable;
 use function Safe\preg_match;
 
 class Contributor{
-	public ?int $ContributorId = null;
 	public ?int $EbookId = null;
 	public string $Name;
 	public string $UrlName;
@@ -136,7 +135,5 @@ class Contributor{
 				?)
 		', [$this->EbookId, $this->Name, $this->UrlName, $this->SortName, $this->WikipediaUrl, $this->MarcRole, $this->FullName,
 			$this->NacoafUrl, $this->SortOrder]);
-
-		$this->ContributorId = Db::GetLastInsertedId();
 	}
 }
diff --git a/lib/Ebook.php b/lib/Ebook.php
index f66775e9..78e10066 100644
--- a/lib/Ebook.php
+++ b/lib/Ebook.php
@@ -210,7 +210,7 @@ class Ebook{
 						from Contributors
 						where EbookId = ?
 							and MarcRole = ?
-						order by ContributorId
+						order by SortOrder asc
 					', [$this->EbookId, 'aut'], Contributor::class);
 		}
 
@@ -227,7 +227,7 @@ class Ebook{
 							from Contributors
 							where EbookId = ?
 								and MarcRole = ?
-							order by ContributorId
+							order by SortOrder asc
 						', [$this->EbookId, 'ill'], Contributor::class);
 		}
 
@@ -244,7 +244,7 @@ class Ebook{
 							from Contributors
 							where EbookId = ?
 								and MarcRole = ?
-							order by ContributorId
+							order by SortOrder asc
 						', [$this->EbookId, 'trl'], Contributor::class);
 		}
 
@@ -261,7 +261,7 @@ class Ebook{
 							from Contributors
 							where EbookId = ?
 								and MarcRole = ?
-							order by ContributorId
+							order by SortOrder asc
 						', [$this->EbookId, 'ctb'], Contributor::class);
 		}