diff --git a/chrome/content/zotero/xpcom/schema.js b/chrome/content/zotero/xpcom/schema.js
index 6a67bf2f5..51261d036 100644
--- a/chrome/content/zotero/xpcom/schema.js
+++ b/chrome/content/zotero/xpcom/schema.js
@@ -2416,8 +2416,8 @@ Zotero.Schema = new function(){
 			
 			else if (i == 100) {
 				let userID = yield Zotero.DB.valueQueryAsync("SELECT value FROM settings WHERE setting='account' AND key='userID'");
-				if (userID) {
-					let predicateID = yield Zotero.DB.valueQueryAsync("SELECT predicateID FROM relationPredicates WHERE predicate='dc:relation'");
+				let predicateID = yield Zotero.DB.valueQueryAsync("SELECT predicateID FROM relationPredicates WHERE predicate='dc:relation'");
+				if (userID && predicateID) {
 					let rows = yield Zotero.DB.queryAsync("SELECT itemID, object FROM items JOIN itemRelations IR USING (itemID) WHERE libraryID=? AND predicateID=?", [1, predicateID]);
 					for (let row of rows) {
 						let matches = row.object.match(/^http:\/\/zotero.org\/users\/(\d+)\/items\/([A-Z0-9]+)$/);