diff --git a/src/components/structures/GroupView.js b/src/components/structures/GroupView.js
index 4056557a7c..4d8f47003c 100644
--- a/src/components/structures/GroupView.js
+++ b/src/components/structures/GroupView.js
@@ -38,7 +38,6 @@ import FlairStore from '../../stores/FlairStore';
 import { showGroupAddRoomDialog } from '../../GroupAddressPicker';
 import {makeGroupPermalink, makeUserPermalink} from "../../utils/permalinks/Permalinks";
 import {Group} from "matrix-js-sdk";
-import {sleep} from "../../utils/promise";
 
 const LONG_DESC_PLACEHOLDER = _td(
 `<h1>HTML for your community's page</h1>
@@ -693,7 +692,7 @@ export default createReactClass({
 
         // Wait 500ms to prevent flashing. Do this before sending a request otherwise we risk the
         // spinner disappearing after we have fetched new group data.
-        await sleep(500);
+        await Promise.delay(500);
 
         GroupStore.acceptGroupInvite(this.props.groupId).then(() => {
             // don't reset membershipBusy here: wait for the membership change to come down the sync
@@ -712,7 +711,7 @@ export default createReactClass({
 
         // Wait 500ms to prevent flashing. Do this before sending a request otherwise we risk the
         // spinner disappearing after we have fetched new group data.
-        await sleep(500);
+        await Promise.delay(500);
 
         GroupStore.leaveGroup(this.props.groupId).then(() => {
             // don't reset membershipBusy here: wait for the membership change to come down the sync
@@ -736,7 +735,7 @@ export default createReactClass({
 
         // Wait 500ms to prevent flashing. Do this before sending a request otherwise we risk the
         // spinner disappearing after we have fetched new group data.
-        await sleep(500);
+        await Promise.delay(500);
 
         GroupStore.joinGroup(this.props.groupId).then(() => {
             // don't reset membershipBusy here: wait for the membership change to come down the sync
@@ -788,7 +787,7 @@ export default createReactClass({
 
                 // Wait 500ms to prevent flashing. Do this before sending a request otherwise we risk the
                 // spinner disappearing after we have fetched new group data.
-                await sleep(500);
+                await Promise.delay(500);
 
                 GroupStore.leaveGroup(this.props.groupId).then(() => {
                     // don't reset membershipBusy here: wait for the membership change to come down the sync
diff --git a/src/components/views/context_menus/RoomTileContextMenu.js b/src/components/views/context_menus/RoomTileContextMenu.js
index 541daef27f..9bb573026f 100644
--- a/src/components/views/context_menus/RoomTileContextMenu.js
+++ b/src/components/views/context_menus/RoomTileContextMenu.js
@@ -32,7 +32,6 @@ import * as RoomNotifs from '../../../RoomNotifs';
 import Modal from '../../../Modal';
 import RoomListActions from '../../../actions/RoomListActions';
 import RoomViewStore from '../../../stores/RoomViewStore';
-import {sleep} from "../../../utils/promise";
 
 module.exports = createReactClass({
     displayName: 'RoomTileContextMenu',
@@ -63,7 +62,7 @@ module.exports = createReactClass({
 
     _toggleTag: function(tagNameOn, tagNameOff) {
         if (!MatrixClientPeg.get().isGuest()) {
-            sleep(500).then(() => {
+            Promise.delay(500).then(() => {
                 dis.dispatch(RoomListActions.tagRoom(
                     MatrixClientPeg.get(),
                     this.props.room,
@@ -120,7 +119,7 @@ module.exports = createReactClass({
 
         Rooms.guessAndSetDMRoom(
             this.props.room, newIsDirectMessage,
-        ).then(sleep(500)).finally(() => {
+        ).delay(500).finally(() => {
             // Close the context menu
             if (this.props.onFinished) {
                 this.props.onFinished();
@@ -194,7 +193,7 @@ module.exports = createReactClass({
         RoomNotifs.setRoomNotifsState(roomId, newState).done(() => {
             // delay slightly so that the user can see their state change
             // before closing the menu
-            return sleep(500).then(() => {
+            return Promise.delay(500).then(() => {
                 if (this._unmounted) return;
                 // Close the context menu
                 if (this.props.onFinished) {
diff --git a/src/components/views/dialogs/AddressPickerDialog.js b/src/components/views/dialogs/AddressPickerDialog.js
index dc61f23956..fb779fa96f 100644
--- a/src/components/views/dialogs/AddressPickerDialog.js
+++ b/src/components/views/dialogs/AddressPickerDialog.js
@@ -32,7 +32,6 @@ import * as Email from '../../../email';
 import IdentityAuthClient from '../../../IdentityAuthClient';
 import { getDefaultIdentityServerUrl, useDefaultIdentityServer } from '../../../utils/IdentityServerUtils';
 import { abbreviateUrl } from '../../../utils/UrlUtils';
-import {sleep} from "../../../utils/promise";
 
 const TRUNCATE_QUERY_LIST = 40;
 const QUERY_USER_DIRECTORY_DEBOUNCE_MS = 200;
@@ -534,7 +533,7 @@ module.exports = createReactClass({
         };
 
         // wait a bit to let the user finish typing
-        await sleep(500);
+        await Promise.delay(500);
         if (cancelled) return null;
 
         try {
diff --git a/src/components/views/settings/tabs/user/SecurityUserSettingsTab.js b/src/components/views/settings/tabs/user/SecurityUserSettingsTab.js
index 222af48fa1..e619791b01 100644
--- a/src/components/views/settings/tabs/user/SecurityUserSettingsTab.js
+++ b/src/components/views/settings/tabs/user/SecurityUserSettingsTab.js
@@ -25,7 +25,6 @@ import Analytics from "../../../../../Analytics";
 import Promise from "bluebird";
 import Modal from "../../../../../Modal";
 import sdk from "../../../../..";
-import {sleep} from "../../../../../utils/promise";
 
 export class IgnoredUser extends React.Component {
     static propTypes = {
@@ -130,7 +129,7 @@ export default class SecurityUserSettingsTab extends React.Component {
                 if (e.errcode === "M_LIMIT_EXCEEDED") {
                     // Add a delay between each invite change in order to avoid rate
                     // limiting by the server.
-                    await sleep(e.retry_after_ms || 2500);
+                    await Promise.delay(e.retry_after_ms || 2500);
 
                     // Redo last action
                     i--;