diff --git a/src/MenuTemplate.ts b/src/MenuTemplate.ts
index d2065cd..6e5f0bc 100644
--- a/src/MenuTemplate.ts
+++ b/src/MenuTemplate.ts
@@ -74,7 +74,7 @@ const editMenu: MenuItemConstructorOptions = {
   ],
 }
 
-const viewMenu = {
+const viewMenu: MenuItemConstructorOptions = {
   label: 'View',
   submenu: [
     {
@@ -93,8 +93,9 @@ const viewMenu = {
       click: () => {
         const window = BrowserWindow.getFocusedWindow()
         if (window) {
-          const zoom = window.webContents.getZoomFactor()
-          window.webContents.setZoomFactor(Math.min(zoom + 0.1, 2.0))
+          window.webContents.getZoomFactor((zoom) => {
+            window.webContents.setZoomFactor(Math.min(zoom + 0.1, 2.0))
+          })
         }
       },
     },
@@ -104,15 +105,16 @@ const viewMenu = {
       click: () => {
         const window = BrowserWindow.getFocusedWindow()
         if (window) {
-          const zoom = window.webContents.getZoomFactor()
-          window.webContents.setZoomFactor(Math.max(zoom - 0.1, 0.5))
+          window.webContents.getZoomFactor((zoom) => {
+            window.webContents.setZoomFactor(Math.max(zoom - 0.1, 0.5))
+          })
         }
       },
     },
   ],
 }
 
-const template: Array<(MenuItemConstructorOptions) | (MenuItem)> = [
+const template: any = [
   applicationMenu,
   editMenu,
   viewMenu,