diff --git a/packages/backend/src/server/web/boot.js b/packages/backend/src/server/web/boot.js
index cb0c3d310..e1864ae12 100644
--- a/packages/backend/src/server/web/boot.js
+++ b/packages/backend/src/server/web/boot.js
@@ -217,7 +217,7 @@
 			font-family: BIZ UDGothic, Roboto, HelveticaNeue, Arial, sans-serif;
 		}
 
-		#misskey_app,
+		#sharkey_app,
 		#splash {
 			display: none !important;
 		}
diff --git a/packages/backend/src/server/web/error.css b/packages/backend/src/server/web/error.css
index ea3056bda..caa179e25 100644
--- a/packages/backend/src/server/web/error.css
+++ b/packages/backend/src/server/web/error.css
@@ -8,7 +8,7 @@
     font-family: BIZ UDGothic, Roboto, HelveticaNeue, Arial, sans-serif;
 }
 
-#misskey_app,
+#sharkey_app,
 #splash {
     display: none !important;
 }
diff --git a/packages/frontend/src/boot/common.ts b/packages/frontend/src/boot/common.ts
index fdb3c4e04..82bb44c07 100644
--- a/packages/frontend/src/boot/common.ts
+++ b/packages/frontend/src/boot/common.ts
@@ -249,7 +249,7 @@ export async function common(createVue: () => App<Element>) {
 	// https://github.com/misskey-dev/misskey/pull/8575#issuecomment-1114239210
 	// なぜか2回実行されることがあるため、mountするdivを1つに制限する
 	const rootEl = ((): HTMLElement => {
-		const MISSKEY_MOUNT_DIV_ID = 'misskey_app';
+		const MISSKEY_MOUNT_DIV_ID = 'sharkey_app';
 
 		const currentRoot = document.getElementById(MISSKEY_MOUNT_DIV_ID);
 
diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 7df272d10..3224944cd 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -279,7 +279,7 @@ body {
 	overscroll-behavior: none;
 }
 
-#misskey_app {
+#sharkey_app {
 	width: 100%;
 	height: 100%;
 	overflow: clip;
diff --git a/packages/frontend/src/ui/universal.vue b/packages/frontend/src/ui/universal.vue
index da0469a23..0213f94f5 100644
--- a/packages/frontend/src/ui/universal.vue
+++ b/packages/frontend/src/ui/universal.vue
@@ -248,7 +248,7 @@ body {
 	overscroll-behavior: none;
 }
 
-#misskey_app {
+#sharkey_app {
 	width: 100%;
 	height: 100%;
 	overflow: clip;