diff --git a/chrome/content/zotero/xpcom/schema.js b/chrome/content/zotero/xpcom/schema.js
index 9380f1ff9f..1839ffdc44 100644
--- a/chrome/content/zotero/xpcom/schema.js
+++ b/chrome/content/zotero/xpcom/schema.js
@@ -2245,6 +2245,17 @@ Zotero.Schema = new function(){
 			else if (i == 85) {
 				yield Zotero.DB.queryAsync("DELETE FROM version WHERE schema IN ('sync', 'syncdeletelog')");
 			}
+			
+			else if (i == 86) {
+				let rows = yield Zotero.DB.queryAsync("SELECT ROWID AS id, * FROM itemRelations WHERE SUBSTR(object, 1, 18)='http://zotero.org/' AND NOT INSTR(object, 'item')");
+				for (let i = 0; i < rows.length; i++) {
+					// http://zotero.org/users/local/aFeGasdGSdH/8QZ36WQ3 -> http://zotero.org/users/local/aFeGasdGSdH/items/8QZ36WQ3
+					// http://zotero.org/users/12341/8QZ36WQ3 -> http://zotero.org/users/12341/items/8QZ36WQ3
+					// http://zotero.org/groups/12341/8QZ36WQ3 -> http://zotero.org/groups/12341/items/8QZ36WQ3
+					let newObject = rows[i].object.replace(/^(http:\/\/zotero.org\/(?:(?:users|groups)\/\d+|users\/local\/[^\/]+))\/([A-Z0-9]{8})$/, '$1/items/$2');
+					yield Zotero.DB.queryAsync("UPDATE itemRelations SET object=? WHERE ROWID=?", [newObject, rows[i].id]);
+				}
+			}
 		}
 		
 		yield _updateDBVersion('userdata', toVersion);
diff --git a/resource/schema/userdata.sql b/resource/schema/userdata.sql
index f6d4376ba0..bdfbdc5b4e 100644
--- a/resource/schema/userdata.sql
+++ b/resource/schema/userdata.sql
@@ -1,4 +1,4 @@
--- 85
+-- 86
 
 -- Copyright (c) 2009 Center for History and New Media
 --                    George Mason University, Fairfax, Virginia, USA