diff --git a/src/HtmlUtils.tsx b/src/HtmlUtils.tsx
index 12752eb20f..59b596a5da 100644
--- a/src/HtmlUtils.tsx
+++ b/src/HtmlUtils.tsx
@@ -32,7 +32,6 @@ import { AllHtmlEntities } from 'html-entities';
 import SettingsStore from './settings/SettingsStore';
 import cheerio from 'cheerio';
 
-import {MatrixClientPeg} from './MatrixClientPeg';
 import {tryTransformPermalinkToLocalHref} from "./utils/permalinks/Permalinks";
 import {SHORTCODE_TO_EMOJI, getEmojiFromUnicode} from "./emoji";
 import ReplyThread from "./components/views/elements/ReplyThread";
diff --git a/src/components/structures/LeftPanel.tsx b/src/components/structures/LeftPanel.tsx
index f7865d094a..9a1ce63785 100644
--- a/src/components/structures/LeftPanel.tsx
+++ b/src/components/structures/LeftPanel.tsx
@@ -36,7 +36,6 @@ import {Key} from "../../Keyboard";
 import IndicatorScrollbar from "../structures/IndicatorScrollbar";
 import AccessibleTooltipButton from "../views/elements/AccessibleTooltipButton";
 import { OwnProfileStore } from "../../stores/OwnProfileStore";
-import { MatrixClientPeg } from "../../MatrixClientPeg";
 import RoomListNumResults from "../views/rooms/RoomListNumResults";
 import LeftPanelWidget from "./LeftPanelWidget";
 import SpacePanel from "../views/spaces/SpacePanel";
diff --git a/src/components/views/avatars/GroupAvatar.tsx b/src/components/views/avatars/GroupAvatar.tsx
index dc363da304..321ca025a3 100644
--- a/src/components/views/avatars/GroupAvatar.tsx
+++ b/src/components/views/avatars/GroupAvatar.tsx
@@ -15,7 +15,6 @@ limitations under the License.
 */
 
 import React from 'react';
-import {MatrixClientPeg} from '../../../MatrixClientPeg';
 import BaseAvatar from './BaseAvatar';
 import {replaceableComponent} from "../../../utils/replaceableComponent";
 import {mediaFromMxc} from "../../../customisations/Media";
diff --git a/src/components/views/avatars/WidgetAvatar.tsx b/src/components/views/avatars/WidgetAvatar.tsx
index 6468b0dd49..cca158269e 100644
--- a/src/components/views/avatars/WidgetAvatar.tsx
+++ b/src/components/views/avatars/WidgetAvatar.tsx
@@ -14,10 +14,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import React, {ComponentProps, useContext} from 'react';
+import React, {ComponentProps} from 'react';
 import classNames from 'classnames';
 
-import MatrixClientContext from "../../../contexts/MatrixClientContext";
 import {IApp} from "../../../stores/WidgetStore";
 import BaseAvatar, {BaseAvatarType} from "./BaseAvatar";
 import {mediaFromMxc} from "../../../customisations/Media";
@@ -27,8 +26,6 @@ interface IProps extends Omit<ComponentProps<BaseAvatarType>, "name" | "url" | "
 }
 
 const WidgetAvatar: React.FC<IProps> = ({ app, className, width = 20, height = 20, ...props }) => {
-    const cli = useContext(MatrixClientContext);
-
     let iconUrls = [require("../../../../res/img/element-icons/room/default_app.svg")];
     // heuristics for some better icons until Widgets support their own icons
     if (app.type.includes("jitsi")) {
diff --git a/src/components/views/elements/AddressTile.js b/src/components/views/elements/AddressTile.js
index 4f5ee45a3c..df66d10a71 100644
--- a/src/components/views/elements/AddressTile.js
+++ b/src/components/views/elements/AddressTile.js
@@ -19,7 +19,6 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
 import * as sdk from "../../../index";
-import {MatrixClientPeg} from "../../../MatrixClientPeg";
 import { _t } from '../../../languageHandler';
 import { UserAddressType } from '../../../UserAddress.js';
 import {replaceableComponent} from "../../../utils/replaceableComponent";
diff --git a/src/components/views/elements/Pill.js b/src/components/views/elements/Pill.js
index bf99ee6078..e61d312305 100644
--- a/src/components/views/elements/Pill.js
+++ b/src/components/views/elements/Pill.js
@@ -1,7 +1,5 @@
 /*
-Copyright 2017 Vector Creations Ltd
-Copyright 2018 New Vector Ltd
-Copyright 2019, 2021 The Matrix.org Foundation C.I.C.
+Copyright 2017 - 2019, 2021 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -255,12 +253,12 @@ class Pill extends React.Component {
             case Pill.TYPE_GROUP_MENTION: {
                 if (this.state.group) {
                     const {avatarUrl, groupId, name} = this.state.group;
-                    const cli = MatrixClientPeg.get();
 
                     linkText = groupId;
                     if (this.props.shouldShowPillAvatar) {
-                        avatar = <BaseAvatar name={name || groupId} width={16} height={16} aria-hidden="true"
-                                             url={avatarUrl ? mediaFromMxc(avatarUrl).getSquareThumbnailHttp(16) : null} />;
+                        avatar = <BaseAvatar
+                            name={name || groupId} width={16} height={16} aria-hidden="true"
+                            url={avatarUrl ? mediaFromMxc(avatarUrl).getSquareThumbnailHttp(16) : null} />;
                     }
                     pillClass = 'mx_GroupPill';
                 }
diff --git a/src/components/views/messages/MAudioBody.js b/src/components/views/messages/MAudioBody.js
index 78ded9a514..0d5e449fc0 100644
--- a/src/components/views/messages/MAudioBody.js
+++ b/src/components/views/messages/MAudioBody.js
@@ -17,7 +17,6 @@
 import React from 'react';
 import MFileBody from './MFileBody';
 
-import {MatrixClientPeg} from '../../../MatrixClientPeg';
 import { decryptFile } from '../../../utils/DecryptFile';
 import { _t } from '../../../languageHandler';
 import InlineSpinner from '../elements/InlineSpinner';
diff --git a/src/components/views/messages/MFileBody.js b/src/components/views/messages/MFileBody.js
index 07d7beb793..39a03a1304 100644
--- a/src/components/views/messages/MFileBody.js
+++ b/src/components/views/messages/MFileBody.js
@@ -18,7 +18,6 @@ limitations under the License.
 import React, {createRef} from 'react';
 import PropTypes from 'prop-types';
 import filesize from 'filesize';
-import {MatrixClientPeg} from '../../../MatrixClientPeg';
 import * as sdk from '../../../index';
 import { _t } from '../../../languageHandler';
 import {decryptFile} from '../../../utils/DecryptFile';
diff --git a/src/components/views/messages/MVideoBody.tsx b/src/components/views/messages/MVideoBody.tsx
index 32b071ea24..89e661cb2f 100644
--- a/src/components/views/messages/MVideoBody.tsx
+++ b/src/components/views/messages/MVideoBody.tsx
@@ -17,7 +17,6 @@ limitations under the License.
 
 import React from 'react';
 import MFileBody from './MFileBody';
-import {MatrixClientPeg} from '../../../MatrixClientPeg';
 import { decryptFile } from '../../../utils/DecryptFile';
 import { _t } from '../../../languageHandler';
 import SettingsStore from "../../../settings/SettingsStore";
diff --git a/src/components/views/right_panel/UserInfo.tsx b/src/components/views/right_panel/UserInfo.tsx
index d415d19852..aa11b70e50 100644
--- a/src/components/views/right_panel/UserInfo.tsx
+++ b/src/components/views/right_panel/UserInfo.tsx
@@ -1416,7 +1416,7 @@ const UserInfoHeader: React.FC<{
         };
 
         Modal.createDialog(ImageView, params, "mx_Dialog_lightbox");
-    }, [cli, member]);
+    }, [member]);
 
     const avatarElement = (
         <div className="mx_UserInfo_avatar">
diff --git a/src/customisations/models/IMediaEventContent.ts b/src/customisations/models/IMediaEventContent.ts
index 4cbe07dbd5..fb05d76a4d 100644
--- a/src/customisations/models/IMediaEventContent.ts
+++ b/src/customisations/models/IMediaEventContent.ts
@@ -21,7 +21,7 @@ export interface IEncryptedFile {
     mimetype?: string;
     key: {
         alg: string;
-        key_ops: string[];
+        key_ops: string[]; // eslint-disable-line camelcase
         kty: string;
         k: string;
         ext: boolean;
@@ -35,8 +35,8 @@ export interface IMediaEventContent {
     url?: string; // required on unencrypted media
     file?: IEncryptedFile; // required for *encrypted* media
     info?: {
-        thumbnail_url?: string;
-        thumbnail_file?: IEncryptedFile;
+        thumbnail_url?: string; // eslint-disable-line camelcase
+        thumbnail_file?: IEncryptedFile; // eslint-disable-line camelcase
     };
 }
 
diff --git a/test/components/structures/GroupView-test.js b/test/components/structures/GroupView-test.js
index fb942d2f7c..ee5d1b6912 100644
--- a/test/components/structures/GroupView-test.js
+++ b/test/components/structures/GroupView-test.js
@@ -262,7 +262,8 @@ describe('GroupView', function() {
             expect(longDescElement.innerHTML).toContain('<ul>');
             expect(longDescElement.innerHTML).toContain('<li>And lists!</li>');
 
-            const imgSrc = "https://my.home.server/_matrix/media/r0/thumbnail/someimageurl?width=800&amp;height=600";
+            const imgSrc = "https://my.home.server/_matrix/media/r0/thumbnail/someimageurl" +
+                "?width=800&amp;height=600&amp;method=scale";
             expect(longDescElement.innerHTML).toContain('<img src="' + imgSrc + '">');
         });