diff --git a/packages/frontend/src/components/MkUrlWarningDialog.vue b/packages/frontend/src/components/MkUrlWarningDialog.vue
index acaf025a6..fabd8a840 100644
--- a/packages/frontend/src/components/MkUrlWarningDialog.vue
+++ b/packages/frontend/src/components/MkUrlWarningDialog.vue
@@ -99,7 +99,7 @@ onBeforeUnmount(() => {
 	min-width: 320px;
 	max-width: 480px;
 	box-sizing: border-box;
-	background: var(--panel);
+	background: var(--MI_THEME-panel);
 	border-radius: 16px;
 }