diff --git a/client/specs/__snapshots__/book-tocs.spec.ts.snap b/client/specs/__snapshots__/book-tocs.spec.ts.snap
index 88b4bbe1..a81de877 100644
--- a/client/specs/__snapshots__/book-tocs.spec.ts.snap
+++ b/client/specs/__snapshots__/book-tocs.spec.ts.snap
@@ -176,7 +176,7 @@ exports[`filtering toggleTocTreesFilteringHandler 1`] = `
   [
     {
       "children": [],
-      "type": "ClientOnlyTocKinds.OrphanCollection",
+      "type": "OrphanCollection",
       "value": undefined,
     },
     {
diff --git a/client/specs/book-tocs.spec.ts b/client/specs/book-tocs.spec.ts
index 2cc92bdf..44725b64 100644
--- a/client/specs/book-tocs.spec.ts
+++ b/client/specs/book-tocs.spec.ts
@@ -3,7 +3,7 @@ import type vscode from 'vscode'
 import { expect } from '@jest/globals'
 
 import { BookRootNode, type BookToc, type ClientTocNode, TocNodeKind } from '../../common/src/toc'
-import { type BookOrTocNode, ClientOnlyTocKinds, TocsTreeProvider, toggleTocTreesFilteringHandler } from '../src/book-tocs'
+import { type BookOrTocNode, type OrphanCollection, OrphanCollectionKind, TocsTreeProvider, toggleTocTreesFilteringHandler } from '../src/book-tocs'
 
 const testTocPage: ClientTocNode = {
   type: TocNodeKind.Page,
@@ -38,8 +38,8 @@ const testToc: BookToc = {
   licenseUrl: 'licenseUrl',
   tocTree: [testTocSubbook]
 }
-const testOrphanCollection = {
-  type: ClientOnlyTocKinds.OrphanCollection,
+const testOrphanCollection: OrphanCollection = {
+  type: OrphanCollectionKind,
   children: []
 }
 describe('Toc Provider', () => {
@@ -69,7 +69,7 @@ describe('Toc Provider', () => {
   })
   it('gets children and parents', () => {
     p.update([testToc], [])
-    expect(p.getChildren()).toEqual([testToc, { children: [], type: ClientOnlyTocKinds.OrphanCollection, value: undefined }])
+    expect(p.getChildren()).toEqual([testToc, { children: [], type: OrphanCollectionKind, value: undefined }])
     expect(p.getParent(testToc)).toBe(undefined)
     expect(p.getChildren(testToc)).toEqual(testToc.tocTree)
     expect(p.getParent(testToc.tocTree[0])).toBe(testToc)
@@ -98,7 +98,7 @@ describe('filtering', () => {
     const fakeChildren = [
       { type: BookRootNode.Singleton, tocTree: [{ type: TocNodeKind.Subbook, label: 'unit1', children: [{ type: TocNodeKind.Subbook, label: 'subcol1', children: [{ type: TocNodeKind.Page, label: 'm2', children: [] }] }] }] },
       { type: BookRootNode.Singleton, tocTree: [{ label: 'm1', children: [] }] },
-      { type: ClientOnlyTocKinds.OrphanCollection, children: [], value: undefined }
+      { type: OrphanCollectionKind, children: [], value: undefined }
     ]
     getChildrenStub.returns(fakeChildren)
 
diff --git a/client/src/book-tocs.ts b/client/src/book-tocs.ts
index b06c2d8d..6751856e 100644
--- a/client/src/book-tocs.ts
+++ b/client/src/book-tocs.ts
@@ -3,13 +3,11 @@ import { EventEmitter, type TreeItem, TreeItemCollapsibleState, Uri, type TreeDa
 import { type BookToc, type ClientTocNode, BookRootNode, TocNodeKind, type ClientPageish } from '../../common/src/toc'
 import type vscode from 'vscode'
 
-export enum ClientOnlyTocKinds {
-  OrphanCollection = 'ClientOnlyTocKinds.OrphanCollection'
-}
+export const OrphanCollectionKind = 'OrphanCollection'
 
-interface OrphanCollection {
-  type: ClientOnlyTocKinds.OrphanCollection
-  children: BookOrTocNode[]
+export interface OrphanCollection {
+  type: typeof OrphanCollectionKind
+  children: Array<BookToc | ClientTocNode>
 }
 export type BookOrTocNode = BookToc | ClientTocNode | OrphanCollection
 
@@ -32,7 +30,7 @@ export class TocsTreeProvider implements TreeDataProvider<BookOrTocNode> {
 
   constructor() {
     this.bookTocs = []
-    this.orphanCollection = { type: ClientOnlyTocKinds.OrphanCollection, children: [] }
+    this.orphanCollection = { type: OrphanCollectionKind, children: [] }
   }
 
   public toggleFilterMode() {
@@ -96,7 +94,7 @@ export class TocsTreeProvider implements TreeDataProvider<BookOrTocNode> {
           label: node.value.title,
           contextValue: capabilities.join(',')
         }
-      case ClientOnlyTocKinds.OrphanCollection:
+      case OrphanCollectionKind:
         return {
           iconPath: TocItemIcon.Subbook,
           collapsibleState: TreeItemCollapsibleState.Collapsed,
diff --git a/client/src/tocs-event-handler.ts b/client/src/tocs-event-handler.ts
index 2462f9fe..5cd1412c 100644
--- a/client/src/tocs-event-handler.ts
+++ b/client/src/tocs-event-handler.ts
@@ -1,5 +1,5 @@
 import vscode from 'vscode'
-import { type TocsTreeProvider, type BookOrTocNode, ClientOnlyTocKinds } from './book-tocs'
+import { type TocsTreeProvider, type BookOrTocNode, OrphanCollectionKind } from './book-tocs'
 import { type TocModification, TocModificationKind, type TocModificationParams, TocNodeKind, BookRootNode, type CreatePageEvent, type CreateSubbookEvent, type CreateAncillaryEvent, isClientTocNode } from '../../common/src/toc'
 import { ExtensionServerRequest } from '../../common/src/requests'
 import { expect, getRootPathUri } from './utils'
@@ -212,10 +212,10 @@ export class TocsEventHandler implements vscode.TreeDragAndDropController<BookOr
     if (target === undefined) { throw new Error('BUG: Bad drop target') }
     if (
       target !== dragging &&
-      dragging.type !== ClientOnlyTocKinds.OrphanCollection &&
+      dragging.type !== OrphanCollectionKind &&
       dragging.type !== BookRootNode.Singleton
     ) {
-      if (target.type === ClientOnlyTocKinds.OrphanCollection) {
+      if (target.type === OrphanCollectionKind) {
         await this.removeNode(dragging)
       } else {
         await this.moveNode(dragging, target)