diff --git a/chrome/content/zotero/readAloudFirstRunDialog.js b/chrome/content/zotero/readAloudFirstRunDialog.js
index ed97d771c3..58769f9af0 100644
--- a/chrome/content/zotero/readAloudFirstRunDialog.js
+++ b/chrome/content/zotero/readAloudFirstRunDialog.js
@@ -17,7 +17,7 @@ var Zotero_Read_Aloud_First_Run = new function () {
 	};
 
 	this._createReadAloudFirstRun = function () {
-		let { lang, readAloudEnabledVoices, ftl, getReadAloudRemoteInterface, readAloudLocalVoicesUnavailable } = io.dataIn;
+		let { lang, readAloudEnabledVoices, ftl, getReadAloudRemoteInterface } = io.dataIn;
 
 		let browserWindow = this._iframe.contentWindow;
 		browserWindow.wrappedJSObject.createReadAloudFirstRun(Cu.cloneInto({
@@ -26,7 +26,6 @@ var Zotero_Read_Aloud_First_Run = new function () {
 			ftl,
 			loggedIn: Zotero.Sync.Runner.enabled,
 			remoteInterface: getReadAloudRemoteInterface(browserWindow),
-			readAloudLocalVoicesUnavailable,
 			onOpenLink: (url) => {
 				let win = Services.wm.getMostRecentWindow('navigator:browser');
 				if (win) {
diff --git a/chrome/content/zotero/readAloudVoicesDialog.js b/chrome/content/zotero/readAloudVoicesDialog.js
index 5339739880..82103efe1e 100644
--- a/chrome/content/zotero/readAloudVoicesDialog.js
+++ b/chrome/content/zotero/readAloudVoicesDialog.js
@@ -14,7 +14,7 @@ var Zotero_Read_Aloud_Voices = new function () {
 	};
 
 	this._createReadAloudVoices = function () {
-		let { lang, tier, readAloudEnabledVoices, ftl, getReadAloudRemoteInterface, readAloudLocalVoicesUnavailable } = io.dataIn;
+		let { lang, tier, readAloudEnabledVoices, ftl, getReadAloudRemoteInterface } = io.dataIn;
 
 		let browserWindow = this._iframe.contentWindow;
 		browserWindow.wrappedJSObject.createReadAloudVoices(Cu.cloneInto({
@@ -23,7 +23,6 @@ var Zotero_Read_Aloud_Voices = new function () {
 			readAloudEnabledVoices,
 			ftl,
 			remoteInterface: getReadAloudRemoteInterface(browserWindow),
-			readAloudLocalVoicesUnavailable,
 			onOpenLink: (url) => {
 				let win = Services.wm.getMostRecentWindow('navigator:browser');
 				if (win) {
diff --git a/chrome/content/zotero/xpcom/reader.js b/chrome/content/zotero/xpcom/reader.js
index 3e4bba2ad4..603c27b7b9 100644
--- a/chrome/content/zotero/xpcom/reader.js
+++ b/chrome/content/zotero/xpcom/reader.js
@@ -43,13 +43,6 @@ const ARRAYBUFFER_MAX_LENGTH = Services.appinfo.is64Bit
 const READ_ALOUD_ENABLED_VOICES_PATH = PathUtils.join(Zotero.Profile.dir, 'readAloudEnabledVoices.json');
 const READ_ALOUD_VOICE_DEFAULTS_PATH = PathUtils.join(Zotero.Profile.dir, 'readAloudVoiceDefaults.json');
 
-// TEMP: Local voices make loud pops at the end of every utterance on macOS 27
-// without a patch to libmozglue (a64e3671) that would be risky to backport, so
-// disable them.
-function areReadAloudLocalVoicesUnavailable() {
-	return Zotero.isMac && parseInt(Services.sysinfo.getProperty('version')) === 27;
-}
-
 // Whether the Read Aloud audio cache has been pruned of stale versions this session
 let readAloudCachePruned = false;
 
@@ -272,7 +265,6 @@ class ReaderInstance {
 			readAloudVoices: this._getReadAloudVoices(),
 			readAloudEnabledVoices: await this._getReadAloudEnabledVoices(),
 			readAloudRemoteInterface: this._getReadAloudRemoteInterface(this._iframeWindow),
-			readAloudLocalVoicesUnavailable: areReadAloudLocalVoicesUnavailable(),
 			readAloudHighlightGranularity: Zotero.Prefs.get('reader.readAloud.highlightGranularity'),
 			getSDTPack: this._createGetSDTPack(this._iframeWindow),
 			loggedIn: Zotero.Sync.Runner.enabled,
@@ -1910,7 +1902,6 @@ class ReaderInstance {
 				readAloudEnabledVoices: await this._getReadAloudEnabledVoices(),
 				ftl,
 				getReadAloudRemoteInterface: win => this._getReadAloudRemoteInterface(win),
-				readAloudLocalVoicesUnavailable: areReadAloudLocalVoicesUnavailable(),
 			},
 			dataOut: null,
 			openVoicesDialog: ({ tier }) => {
@@ -1941,7 +1932,6 @@ class ReaderInstance {
 				readAloudEnabledVoices: await this._getReadAloudEnabledVoices(),
 				ftl,
 				getReadAloudRemoteInterface: win => this._getReadAloudRemoteInterface(win),
-				readAloudLocalVoicesUnavailable: areReadAloudLocalVoicesUnavailable(),
 			},
 			dataOut: null,
 		};