diff --git a/appinfo/database.xml b/appinfo/database.xml
index 8830477a..103d7d9a 100644
--- a/appinfo/database.xml
+++ b/appinfo/database.xml
@@ -51,6 +51,16 @@
 	<table>
 		<name>*dbprefix*office_op</name>
 		<declaration>
+			<field>
+				<name>seq</name>
+				<type>integer</type>
+				<default>1</default>
+				<notnull>true</notnull>
+				<autoincrement>1</autoincrement>
+				<unsigned>true</unsigned>
+				<length>4</length>
+				<comments>Sequence number</comments>
+			</field>
 			<field>
 				<name>es_id</name>
 				<type>text</type>
@@ -58,14 +68,6 @@
 				<length>64</length>
 				<comments>Editing session id</comments>
 			</field>
-			<field>
-				<name>seq</name>
-				<type>integer</type>
-				<autoincrement>1</autoincrement>
-				<unsigned>true</unsigned>
-				<length>4</length>
-				<comments>Sequence number</comments>
-			</field>
 			<field>
 				<name>member</name>
 				<type>text</type>
@@ -79,7 +81,14 @@
 				<notnull>false</notnull>
 				<comments>json-string</comments>
 			</field>
-			
+			<index>
+				<name>seq_pKey</name>
+				<primary>true</primary>
+				<field>
+					<name>seq</name>
+					<sorting>ascending</sorting>
+				</field>
+			</index>
 			<index>
 				<name>office_op_eis_index</name>
 				<unique>true</unique>
diff --git a/lib/op.php b/lib/op.php
index 0207b69c..829bf213 100644
--- a/lib/op.php
+++ b/lib/op.php
@@ -5,10 +5,9 @@ namespace OCA\Office;
 class Op {
 
 	public static function add($op){
-		$query = \OCP\DB::prepare('INSERT INTO `*PREFIX*office_op`  (`es_id`, `seq`, `member`, `opspec`) VALUES (?, ?, ?, ?) ');
+		$query = \OCP\DB::prepare('INSERT INTO `*PREFIX*office_op`  (`es_id`, `member`, `opspec`) VALUES (?, ?, ?) ');
 		$result = $query->execute(array(
 			$op['es_id'],
-			$op['seq'],
 			$op['member'],
 			$op['opspec'],
 		));