diff --git a/core/model/Versioned.php b/core/model/Versioned.php
index cea90277a..caa909c6d 100755
--- a/core/model/Versioned.php
+++ b/core/model/Versioned.php
@@ -116,7 +116,7 @@ class Versioned extends DataObjectDecorator {
 				else $dateClause = "";
 
 				DB::query("INSERT INTO \"_Archive$baseTable\"
-					SELECT \"RecordID\", max(Version) FROM \"{$baseTable}_versions\"
+					SELECT \"RecordID\", max(\"Version\") FROM \"{$baseTable}_versions\"
 					$dateClause
 					GROUP BY \"RecordID\"");
 			}