diff --git a/extension/src/background.js b/extension/src/background.js
index bdd52e5..dc92504 100644
--- a/extension/src/background.js
+++ b/extension/src/background.js
@@ -95,9 +95,9 @@ function handleMessage(message, sender) {
     } else if (message['type'] === 'create-popup') {
         const create = message['create'];
         create.url += '&tabId=' + sender.tab.id;
-        browser.windows.create(create);
+        chrome.windows.create(create);
     } else if (message['type'] === 'autofill-code') {
-        browser.tabs.sendMessage(message['tabId'], {
+        chrome.tabs.sendMessage(message['tabId'], {
             type: 'autofill-code',
             code: message['code'],
         });
@@ -106,11 +106,11 @@ function handleMessage(message, sender) {
     }
 }
 
-browser.webRequest.onBeforeRequest.addListener(interceptCode, {
+chrome.webRequest.onBeforeRequest.addListener(interceptCode, {
     urls: ['https://checkin.york.ac.uk/api/selfregistration/*/present'],
 }, ['requestBody']);
-browser.webRequest.onCompleted.addListener(interceptSubmit, {
+chrome.webRequest.onCompleted.addListener(interceptSubmit, {
     urls: ['https://checkin.york.ac.uk/api/selfregistration/*/present'],
 });
 
-browser.runtime.onMessage.addListener(handleMessage)
+chrome.runtime.onMessage.addListener(handleMessage)
diff --git a/extension/src/content.js b/extension/src/content.js
index ca2832a..a4e9735 100644
--- a/extension/src/content.js
+++ b/extension/src/content.js
@@ -9,7 +9,7 @@ console.log('hello');
         const name = section.querySelector('.row:nth-child(2) > .col-md-4').innerText;
         const space = section.querySelector('.row:nth-child(4) > .col-md-4').innerText;
 
-        browser.runtime.sendMessage({
+        chrome.runtime.sendMessage({
             type: 'link-activity-details',
             activityId,
             date,
@@ -26,10 +26,10 @@ console.log('hello');
                 activity: name,
                 space,
             });
-            browser.runtime.sendMessage({
+            chrome.runtime.sendMessage({
                 type: 'create-popup',
                 create: {
-                    url: browser.runtime.getURL('src/popup.html') + '#' + params.toString(),
+                    url: chrome.runtime.getURL('src/popup.html') + '#' + params.toString(),
                     width: 360,
                     height: 480,
                     type: 'popup',
@@ -54,4 +54,4 @@ function handleMessage(message) {
     }
 }
 
-browser.runtime.onMessage.addListener(handleMessage);
+chrome.runtime.onMessage.addListener(handleMessage);
diff --git a/extension/src/popup.js b/extension/src/popup.js
index af404ef..3b5a9c5 100644
--- a/extension/src/popup.js
+++ b/extension/src/popup.js
@@ -61,7 +61,7 @@
             window.close();
         }, 'warning');
         const submitButton = simpleButton(`Autofill ${code}`, function () {
-            browser.runtime.sendMessage({
+            chrome.runtime.sendMessage({
                 type: 'autofill-code',
                 code,
                 tabId,