diff --git a/frontend/src/useful/shortcut.ts b/frontend/src/useful/shortcut.ts
index 52d2603d..1df32c56 100644
--- a/frontend/src/useful/shortcut.ts
+++ b/frontend/src/useful/shortcut.ts
@@ -27,6 +27,8 @@ const actions = {
 
 type ActionName = keyof typeof actions
 
+export const hasCtrlCmd = (e: KeyboardEvent | MouseEvent) => isMacOS ? e.metaKey : e.ctrlKey
+
 export const getKeyLabel = (key: XKey | string | number) => {
   switch (key) {
     case CtrlCmd:
@@ -45,8 +47,6 @@ export const getActionLabel = (name: ActionName) => {
   return keys.map(getKeyLabel).join(' + ')
 }
 
-export const hasCtrlCmd = (e: KeyboardEvent | MouseEvent) => isMacOS ? e.metaKey : e.ctrlKey
-
 export const matchKeys = (e: KeyboardEvent | MouseEvent, keys: (string | number)[]) => {
   for (const key of keys) {
     switch (key) {
diff --git a/frontend/src/useful/startup.ts b/frontend/src/useful/startup.ts
index 2396b7be..bbe43f5f 100644
--- a/frontend/src/useful/startup.ts
+++ b/frontend/src/useful/startup.ts
@@ -3,6 +3,7 @@ import { useBus } from './bus'
 import RunPlugin from '@/plugins/RunPlugin'
 import { copyText } from './copy-text'
 import env from './env'
+import { hasCtrlCmd } from './shortcut'
 
 export default function startup () {
   const bus = useBus()
@@ -35,7 +36,7 @@ export default function startup () {
     }
 
     window.addEventListener('keydown', e => {
-      if (e.ctrlKey || e.metaKey) {
+      if (hasCtrlCmd(e)) {
         if (e.key === '0') {
           webContents.setZoomFactor(1)
         } else if (e.key === '=') {
@@ -49,7 +50,7 @@ export default function startup () {
     window.addEventListener('mousewheel', event => {
       const e = event as WheelEvent
 
-      if (e.ctrlKey || e.metaKey) {
+      if (hasCtrlCmd(e)) {
         changeZoomFactor(e.deltaY < 0)
       }
     })