diff --git a/background/background.js b/background/background.js
index 3b4f1aa7..13d12e2f 100644
--- a/background/background.js
+++ b/background/background.js
@@ -26,7 +26,7 @@ chrome.webNavigation.onHistoryStateUpdated.addListener(data =>
 chrome.webNavigation.onReferenceFragmentUpdated.addListener(data =>
   webNavigationListener('styleReplaceAll', data));
 
-chrome.tabs.onAttached.addListener((tabId, data) => {
+chrome.tabs.onAttached.addListener(tabId => {
   // When an edit page gets attached or detached, remember its state
   // so we can do the same to the next one to open.
   chrome.tabs.get(tabId, tab => {
diff --git a/edit/edit.js b/edit/edit.js
index 8afb891e..d7edd6cc 100644
--- a/edit/edit.js
+++ b/edit/edit.js
@@ -831,8 +831,8 @@ function setupGlobalSearch() {
         return;
       }
       // hide the first two dialogs (replace, replaceWith)
-      cm.openDialog = (tmpl, callback, opt) => {
-        cm.openDialog = (tmpl, callback, opt) => {
+      cm.openDialog = (tmpl, callback) => {
+        cm.openDialog = (tmpl, callback) => {
           cm.openDialog = originalOpenDialog;
           if (all) {
             callback(replacement);
diff --git a/manage/fileSaveLoad.js b/manage/fileSaveLoad.js
index ec54517d..4a8397ec 100644
--- a/manage/fileSaveLoad.js
+++ b/manage/fileSaveLoad.js
@@ -195,7 +195,7 @@ function importFromString(jsonString) {
         contents: report.length ? report : t('importReportUnchanged'),
         buttons: [t('confirmOK'), numChanged && t('undo')],
         onshow:  bindClick,
-      }).then(({button, enter, esc}) => {
+      }).then(({button}) => {
         if (button === 1) {
           undo();
         }
@@ -241,7 +241,7 @@ function importFromString(jsonString) {
     }
   }
 
-  function bindClick(box) {
+  function bindClick() {
     const highlightElement = event => {
       const styleElement = $('#style-' + event.target.dataset.id);
       if (styleElement) {
@@ -367,7 +367,7 @@ Object.assign(document.body, {
       this.classList.remove('fadeout');
     }
   },
-  ondragend(event) {
+  ondragend() {
     animateElement(this, {className: 'fadeout', removeExtraClasses: ['dropzone']}).then(() => {
       this.style.animationDuration = '';
     });
diff --git a/manage/manage.js b/manage/manage.js
index 124c7d72..3d11308a 100644
--- a/manage/manage.js
+++ b/manage/manage.js
@@ -360,7 +360,7 @@ Object.assign(handleEvent, {
       className: 'danger center',
       buttons: [t('confirmDelete'), t('confirmCancel')],
     })
-    .then(({button, enter, esc}) => {
+    .then(({button, enter}) => {
       if (button === 0 || enter) {
         deleteStyleSafe({id});
       }