diff --git a/packages/frontend/assets/locked_with_key_3d.png b/packages/frontend/assets/locked_with_key_3d.png
new file mode 100644
index 0000000000..aae99b982d
Binary files /dev/null and b/packages/frontend/assets/locked_with_key_3d.png differ
diff --git a/packages/frontend/src/components/MkPasswordDialog.vue b/packages/frontend/src/components/MkPasswordDialog.vue
index e749725fea..4d1787d420 100644
--- a/packages/frontend/src/components/MkPasswordDialog.vue
+++ b/packages/frontend/src/components/MkPasswordDialog.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 	<MkSpacer :marginMin="20" :marginMax="28">
 		<div style="padding: 0 0 16px 0; text-align: center;">
-			<img src="/fluent-emoji/1f510.png" alt="🔐" style="display: block; margin: 0 auto; width: 48px;">
+			<img src="/client-assets/locked_with_key_3d.png" alt="🔐" style="display: block; margin: 0 auto; width: 48px;">
 			<div style="margin-top: 16px;">{{ i18n.ts.authenticationRequiredToContinue }}</div>
 		</div>