diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 8b7c8b64..3e6a9326 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -391,10 +391,6 @@
   "excludeStyleByUrlLabel": {
     "message": "Exclude the current URL"
   },
-  "exportDeduplicate": {
-    "message": "Shift-click or Right-click will export a smaller file for UserCSS styles.\nSuch styles can be imported only in Stylus 1.5.23 or newer.",
-    "description": "Tooltip for the button to export all styles in the 'manage' page"
-  },
   "exportLabel": {
     "message": "Export",
     "description": "Label for the button to export a style ('edit' page) or all styles ('manage' page)"
diff --git a/manage.html b/manage.html
index 85b10f2e..c0eddb19 100644
--- a/manage.html
+++ b/manage.html
@@ -323,7 +323,7 @@
         <summary><h2 id="backup-title" i18n-text="backupButtons"></h2></summary>
         <span id="backup-message" i18n-text="backupMessage"></span>
         <div id="backup-buttons">
-          <button id="file-all-styles" i18n-text="exportLabel" i18n-title="exportDeduplicate"></button>
+          <button id="file-all-styles" i18n-text="exportLabel"></button>
           <button id="unfile-all-styles" i18n-text="importLabel"></button>
           <button id="sync-styles" i18n-text="optionsCustomizeSync"></button>
         </div>
diff --git a/manage/import-export.js b/manage/import-export.js
index 77457d2f..16793854 100644
--- a/manage/import-export.js
+++ b/manage/import-export.js
@@ -14,10 +14,7 @@
 */// dom.js
 'use strict';
 
-Object.assign($('#file-all-styles'), {
-  onclick: exportToFile,
-  oncontextmenu: exportToFile,
-});
+$('#file-all-styles').onclick = exportToFile;
 $('#unfile-all-styles').onclick = () => importFromFile({fileTypeFilter: '.json'});
 
 Object.assign(document.body, {
@@ -328,17 +325,13 @@ async function importFromString(jsonString) {
   }
 }
 
-/** @param {MouseEvent} e */
-async function exportToFile(e) {
-  e.preventDefault();
+async function exportToFile() {
   await require(['/js/storage-util']);
-  const shouldClean = e.shiftKey || e.button === 2;
-  const styles = await API.styles.getAll();
   const data = [
     Object.assign({
       [prefs.STORAGE_KEY]: prefs.values,
     }, await chromeSync.getLZValues()),
-    ...shouldClean ? styles.map(cleanupStyle) : styles,
+    ...(await API.styles.getAll()).map(cleanupStyle),
   ];
   const text = JSON.stringify(data, null, '  ');
   const type = 'application/json';
@@ -347,7 +340,7 @@ async function exportToFile(e) {
     download: generateFileName(),
     type,
   }).dispatchEvent(new MouseEvent('click'));
-  /** Stripping `sections`, `null` and empty objects */
+  /** strip `sections`, `null` and empty objects */
   function cleanupStyle(style) {
     const copy = {};
     for (let [key, val] of Object.entries(style)) {