diff --git a/app/javascript/mastodon/containers/status_container.js b/app/javascript/mastodon/containers/status_container.js
index b2f5a4a602..0b9d3385f6 100644
--- a/app/javascript/mastodon/containers/status_container.js
+++ b/app/javascript/mastodon/containers/status_container.js
@@ -109,7 +109,7 @@ const makeMapStateToProps = () => {
       sonsIds = getSonsIds(state, { id : status.getIn(['reblog', 'id'], props.id)});
       if(status.get('reblog')) {
         ancestorsIds = getAncestorsIds(state, { id: status.getIn(['reblog', 'in_reply_to_id']) });
-        if(ancestorsIds && ancestorsIds.first() == treeRoot.split('/').pop()) {
+        if(ancestorsIds && treeRoot && ancestorsIds.first() == treeRoot.split('/').pop()) {
           ancestorsText = getAncestorsText(state, { ids: ancestorsIds.shift() });
         }
       }
diff --git a/app/javascript/mastodon/features/compose/index.js b/app/javascript/mastodon/features/compose/index.js
index 255b551d5c..c77c7fe002 100644
--- a/app/javascript/mastodon/features/compose/index.js
+++ b/app/javascript/mastodon/features/compose/index.js
@@ -113,7 +113,7 @@ class Compose extends React.PureComponent {
           {!columns.some(column => column.get('id') === 'HOME') && (
             <Link to='/timelines/home' className='drawer__tab' title={intl.formatMessage(messages.home_timeline)} aria-label={intl.formatMessage(messages.home_timeline)}><Icon id='home' fixedWidth /></Link>
           )}
-          {!columns.some(column => column.get('id') === 'TREE') && (
+          {!columns.some(column => column.get('id') === 'TREE') && treeRoot && (
             <Link to={treeRoot} className='drawer__tab' title={intl.formatMessage(messages.tree)} aria-label={intl.formatMessage(messages.tree)}><Icon id='tree' fixedWidth /></Link>
           )}
           {!columns.some(column => column.get('id') === 'NOTIFICATIONS') && (
diff --git a/app/javascript/mastodon/features/ui/components/navigation_panel.js b/app/javascript/mastodon/features/ui/components/navigation_panel.js
index 1a67eeb836..7e97f3df0c 100644
--- a/app/javascript/mastodon/features/ui/components/navigation_panel.js
+++ b/app/javascript/mastodon/features/ui/components/navigation_panel.js
@@ -11,7 +11,9 @@ import TrendsContainer from 'mastodon/features/getting_started/containers/trends
 const NavigationPanel = () => (
   <div className='navigation-panel'>
     <NavLink className='column-link column-link--transparent' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><Icon className='column-link__icon' id='home' fixedWidth /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>
-    <NavLink className='column-link column-link--transparent' to={treeRoot} data-preview-title-id='column.tree' data-preview-icon='tree' ><Icon className='column-link__icon' id='tree' fixedWidth /><FormattedMessage id='tabs_bar.tree' defaultMessage='Tree' /></NavLink>
+    {treeRoot && (
+      <NavLink className='column-link column-link--transparent' to={treeRoot} data-preview-title-id='column.tree' data-preview-icon='tree' ><Icon className='column-link__icon' id='tree' fixedWidth /><FormattedMessage id='tabs_bar.tree' defaultMessage='Tree' /></NavLink>
+    )}
     <NavLink className='column-link column-link--transparent' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsCounterIcon className='column-link__icon' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>
     <FollowRequestsNavLink />
     <NavLink className='column-link column-link--transparent' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><Icon className='column-link__icon' id='users' fixedWidth /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>
diff --git a/app/javascript/mastodon/features/ui/components/tabs_bar.js b/app/javascript/mastodon/features/ui/components/tabs_bar.js
index bd51436a12..59bb3ffa39 100644
--- a/app/javascript/mastodon/features/ui/components/tabs_bar.js
+++ b/app/javascript/mastodon/features/ui/components/tabs_bar.js
@@ -12,13 +12,14 @@ import ReactHtmlParser, { processNodes, convertNodeToElement, htmlparser2 } from
 
 export const links = [
   <NavLink className='tabs-bar__link' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><Icon id='home' fixedWidth /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
-  <NavLink className='tabs-bar__link' to={treeRoot} data-preview-title-id='column.tree' data-preview-icon='tree' ><Icon id='tree' fixedWidth /><FormattedMessage id='tabs_bar.tree' defaultMessage='Tree' /></NavLink>,
+  treeRoot && (
+  <NavLink className='tabs-bar__link' to={treeRoot} data-preview-title-id='column.tree' data-preview-icon='tree' ><Icon id='tree' fixedWidth /><FormattedMessage id='tabs_bar.tree' defaultMessage='Tree' /></NavLink>),
   <NavLink className='tabs-bar__link' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsCounterIcon /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
   <NavLink className='tabs-bar__link' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><Icon id='users' fixedWidth /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>,
   <NavLink className='tabs-bar__link' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><Icon id='globe' fixedWidth /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,
   <NavLink className='tabs-bar__link optional' to='/search' data-preview-title-id='tabs_bar.search' data-preview-icon='bell' ><Icon id='search' fixedWidth /><FormattedMessage id='tabs_bar.search' defaultMessage='Search' /></NavLink>,
   <NavLink className='tabs-bar__link' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='bars' ><Icon id='bars' fixedWidth /></NavLink>,
-];
+].filter(q => !!q);
 
 export function getIndex (path) {
   return links.findIndex(link => link.props.to === path);