diff --git a/chrome/content/zotero/xpcom/schema.js b/chrome/content/zotero/xpcom/schema.js
index 791da1a3a..b9e0dfbf1 100644
--- a/chrome/content/zotero/xpcom/schema.js
+++ b/chrome/content/zotero/xpcom/schema.js
@@ -1462,7 +1462,7 @@ Zotero.Schema = new function(){
 	function _updateDBVersion(schema, version) {
 		_dbVersions[schema] = version;
 		var sql = "REPLACE INTO version (schema,version) VALUES (?,?)";
-		return Zotero.DB.queryAsync(sql, [schema, version]);
+		return Zotero.DB.queryAsync(sql, [schema, parseInt(version)]);
 	}