diff --git a/src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js b/src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js
index d1fed21a1f..e47f591dcb 100644
--- a/src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js
+++ b/src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js
@@ -113,11 +113,11 @@ export default class PreferencesUserSettingsTab extends React.Component {
         let crawlingRooms = 0;
         let totalCrawlingRooms = 0;
 
-        let eventIndex = EventIndexPeg.get();
+        const eventIndex = EventIndexPeg.get();
 
         if (eventIndex !== null) {
             eventIndexSize = await eventIndex.indexSize();
-            let crawledRooms = eventIndex.currentlyCrawledRooms();
+            const crawledRooms = eventIndex.currentlyCrawledRooms();
             crawlingRooms = crawledRooms.crawlingRooms.size;
             totalCrawlingRooms = crawledRooms.totalRooms.size;
         }
@@ -211,8 +211,7 @@ export default class PreferencesUserSettingsTab extends React.Component {
 
         if (!this.state.eventIndexingEnabled) {
             crawlerState = <div>{_t("Message downloader is stopped.")}</div>;
-        }
-        else if (this.state.crawlingRooms === 0) {
+        } else if (this.state.crawlingRooms === 0) {
             crawlerState = <div>{_t("Message downloader is currently idle.")}</div>;
         } else {
             crawlerState = (
@@ -231,8 +230,8 @@ export default class PreferencesUserSettingsTab extends React.Component {
                     <span className="mx_SettingsTab_subheading">{_t("Encrypted search")}</span>
                     {
                         _t( "To enable search in encrypted rooms, Riot needs to run " +
-                            "a background process to download historical messages "   +
-                            "from those rooms to your computer."
+                            "a background process to download historical messages " +
+                            "from those rooms to your computer.",
                         )
                     }
                     <div className='mx_SettingsTab_subsectionText'>
diff --git a/src/indexing/EventIndex.js b/src/indexing/EventIndex.js
index 1b17cc6d87..0d7f43b839 100644
--- a/src/indexing/EventIndex.js
+++ b/src/indexing/EventIndex.js
@@ -431,8 +431,8 @@ export default class EventIndex {
     }
 
     currentlyCrawledRooms() {
-        let crawlingRooms = new Set();
-        let totalRooms = new Set();
+        const crawlingRooms = new Set();
+        const totalRooms = new Set();
 
         this.crawlerCheckpoints.forEach((checkpoint, index) => {
             crawlingRooms.add(checkpoint.roomId);
@@ -454,6 +454,6 @@ export default class EventIndex {
             totalRooms.add(room.roomId);
         });
 
-        return {crawlingRooms, totalRooms}
+        return {crawlingRooms, totalRooms};
     }
 }
diff --git a/src/settings/Settings.js b/src/settings/Settings.js
index 1c65c38167..817adcfc4d 100644
--- a/src/settings/Settings.js
+++ b/src/settings/Settings.js
@@ -491,9 +491,9 @@ export const SETTINGS = {
         displayName: _td("How long should the crawler wait between requests"),
         default: 3000,
     },
-    "enableCrawling" : {
+    "enableCrawling": {
         supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS,
         displayName: _td("How long should the crawler wait between requests"),
         default: true,
-    }
+    },
 };