diff --git a/app/client/models/UserManagerModel.ts b/app/client/models/UserManagerModel.ts
index 62f16dc2..5cf05764 100644
--- a/app/client/models/UserManagerModel.ts
+++ b/app/client/models/UserManagerModel.ts
@@ -1,3 +1,4 @@
+import {GristDoc} from 'app/client/components/GristDoc';
 import {AppModel} from 'app/client/models/AppModel';
 import {DocPageModel} from 'app/client/models/DocPageModel';
 import {reportWarning} from 'app/client/models/errors';
@@ -25,6 +26,8 @@ export interface UserManagerModel {
   isOrg: boolean;                              // Indicates if the UserManager is for an org
   annotations: Observable<ShareAnnotations>;   // More information about shares, keyed by email.
 
+  gristDoc: GristDoc|null;                     // Populated if there is an open document.
+
   // Resets all unsaved changes
   reset(): void;
   // Recreate annotations, factoring in any changes on the back-end.
@@ -119,6 +122,8 @@ export class UserManagerModelImpl extends Disposable implements UserManagerModel
 
   public isOrg: boolean = this.resourceType === 'organization';
 
+  public gristDoc: GristDoc|null;
+
   // Checks if any members were added/removed/changed, if the max inherited role changed or if the
   // anonymous access setting changed to enable the confirm button to write changes to the server.
   public readonly isAnythingChanged: Computed<boolean> = this.autoDispose(computed<boolean>((use) => {
@@ -142,6 +147,7 @@ export class UserManagerModelImpl extends Disposable implements UserManagerModel
     }
   ) {
     super();
+    this.gristDoc = this._options.docPageModel?.gristDoc.get() ?? null;
     if (this._options.appModel) {
       const features = this._options.appModel.currentFeatures;
       this._shareAnnotator = new ShareAnnotator(features, initData);
@@ -250,8 +256,7 @@ export class UserManagerModelImpl extends Disposable implements UserManagerModel
     // Loop through the members and update the delta.
     for (const m of members) {
       let access = m.access.get();
-      if (m === this.publicMember && access === roles.EDITOR &&
-          this._options.docPageModel?.gristDoc.get()?.hasGranularAccessRules()) {
+      if (m === this.publicMember && access === roles.EDITOR && this.gristDoc?.hasGranularAccessRules()) {
         access = roles.VIEWER;
         if (!options?.silent) {
           reportWarning('Public "Editor" access is incompatible with Access Rules. Reduced to "Viewer".');
diff --git a/app/client/ui/UserManager.ts b/app/client/ui/UserManager.ts
index 2e61064c..e1a08997 100644
--- a/app/client/ui/UserManager.ts
+++ b/app/client/ui/UserManager.ts
@@ -121,13 +121,16 @@ export function showUserManagerModal(userApi: UserAPI, options: IUserManagerOpti
         dom.on('click', () => ctl.close()),
         testId('um-cancel')
       ),
-      cssAccessLink({href: urlState().makeUrl({docPage: 'acl'})},
-        dom.text(use => (use(modelObs) && use(use(modelObs)!.isAnythingChanged)) ? 'Save & ' : ''),
-        'Open Access Rules',
-        dom.on('click', (ev) => {
-          ev.preventDefault();
-          return onConfirm(ctl).then(() => urlState().pushUrl({docPage: 'acl'}));
-        }),
+      dom.maybe(use => use(modelObs)?.resourceType === 'document' && use(modelObs)?.gristDoc, () =>
+        cssAccessLink({href: urlState().makeUrl({docPage: 'acl'})},
+          dom.text(use => (use(modelObs) && use(use(modelObs)!.isAnythingChanged)) ? 'Save & ' : ''),
+          'Open Access Rules',
+          dom.on('click', (ev) => {
+            ev.preventDefault();
+            return onConfirm(ctl).then(() => urlState().pushUrl({docPage: 'acl'}));
+          }),
+          testId('um-open-access-rules')
+        )
       ),
       testId('um-buttons'),
     )