diff --git a/src/app/api/websites/[websiteId]/stats/route.ts b/src/app/api/websites/[websiteId]/stats/route.ts
index 12492537..b7177b5d 100644
--- a/src/app/api/websites/[websiteId]/stats/route.ts
+++ b/src/app/api/websites/[websiteId]/stats/route.ts
@@ -31,7 +31,7 @@ export async function GET(
 
   const data = await getWebsiteStats(websiteId, filters);
 
-  const compare = filters.compare === 'yoy' ? 'yoy' : 'prev';
+  const compare = filters.compare ?? 'prev';
 
   const { startDate, endDate } = getCompareDate(compare, filters.startDate, filters.endDate);
 
diff --git a/src/lib/schema.ts b/src/lib/schema.ts
index 38f7339a..aafd8e43 100644
--- a/src/lib/schema.ts
+++ b/src/lib/schema.ts
@@ -20,7 +20,7 @@ export const dateRangeParams = {
   endDate: z.coerce.date().optional(),
   timezone: timezoneParam.optional(),
   unit: unitParam.optional(),
-  compare: z.string().optional(),
+  compare: z.enum(['prev', 'yoy']).optional(),
 };
 
 export const filterParams = {