diff --git a/packages/app-desktop/ElectronAppWrapper.ts b/packages/app-desktop/ElectronAppWrapper.ts
index 143f26647..9c47ac820 100644
--- a/packages/app-desktop/ElectronAppWrapper.ts
+++ b/packages/app-desktop/ElectronAppWrapper.ts
@@ -99,6 +99,11 @@ export default class ElectronAppWrapper {
 		return null;
 	}
 
+	public allAppWindows() {
+		const allWindowIds = [...this.secondaryWindows_.keys(), defaultWindowId];
+		return allWindowIds.map(id => this.windowById(id));
+	}
+
 	public env() {
 		return this.env_;
 	}
@@ -358,6 +363,9 @@ export default class ElectronAppWrapper {
 			const electronWindowId = window?.id;
 			this.secondaryWindows_.set(windowId, { electronId: electronWindowId });
 
+			// Match the main window's zoom:
+			window.webContents.setZoomFactor(this.mainWindow().webContents.getZoomFactor());
+
 			window.once('close', () => {
 				this.secondaryWindows_.delete(windowId);
 
diff --git a/packages/app-desktop/app.ts b/packages/app-desktop/app.ts
index 6a91b1126..69480c1a9 100644
--- a/packages/app-desktop/app.ts
+++ b/packages/app-desktop/app.ts
@@ -29,7 +29,7 @@ import { reg } from '@joplin/lib/registry';
 const packageInfo: PackageInfo = require('./packageInfo.js');
 import DecryptionWorker from '@joplin/lib/services/DecryptionWorker';
 import ClipperServer from '@joplin/lib/ClipperServer';
-import { ipcRenderer, webFrame } from 'electron';
+import { ipcRenderer } from 'electron';
 const Menu = bridge().Menu;
 const PluginManager = require('@joplin/lib/services/PluginManager');
 import RevisionService from '@joplin/lib/services/RevisionService';
@@ -152,7 +152,7 @@ class Application extends BaseApplication {
 		}
 
 		if (action.type === 'SETTING_UPDATE_ONE' && action.key === 'windowContentZoomFactor' || action.type === 'SETTING_UPDATE_ALL') {
-			webFrame.setZoomFactor(Setting.value('windowContentZoomFactor') / 100);
+			bridge().setZoomFactor(Setting.value('windowContentZoomFactor') / 100);
 		}
 
 		if (action.type === 'SETTING_UPDATE_ONE' && action.key === 'linking.extraAllowedExtensions' || action.type === 'SETTING_UPDATE_ALL') {
diff --git a/packages/app-desktop/bridge.ts b/packages/app-desktop/bridge.ts
index 0a25fffe8..f6f31e036 100644
--- a/packages/app-desktop/bridge.ts
+++ b/packages/app-desktop/bridge.ts
@@ -285,6 +285,13 @@ export class Bridge {
 		this.switchToWindow(defaultWindowId);
 	}
 
+	// zoom should be in the range [0..1]
+	public setZoomFactor(zoom: number) {
+		for (const window of this.electronWrapper_.allAppWindows()) {
+			window.webContents.setZoomFactor(zoom);
+		}
+	}
+
 	public showItemInFolder(fullPath: string) {
 		return require('electron').shell.showItemInFolder(toSystemSlashes(fullPath));
 	}