diff --git a/data/formats-data.ts b/data/formats-data.ts
index 83c1d53d227c..01d52d79f2ba 100644
--- a/data/formats-data.ts
+++ b/data/formats-data.ts
@@ -1962,7 +1962,7 @@ export const FormatsData: import('../sim/dex-species').SpeciesFormatsDataTable =
 	mawilemega: {
 		isNonstandard: "Past",
 		tier: "Illegal",
-		natDexTier: "UU",
+		natDexTier: "UUBL",
 	},
 	aron: {
 		isNonstandard: "Past",