diff --git a/config/formats.js b/config/formats.js
index 0866ef601a..0cdbcb7830 100644
--- a/config/formats.js
+++ b/config/formats.js
@@ -377,7 +377,7 @@ exports.Formats = [
 		],
 	},
 	{
-		name: "[Gen 7] Mix and Mega",
+		name: "[Gen 7] Mix and Mega (suspect test)",
 		desc: [
 			"Mega Stones and Primal Orbs can be used on almost any fully evolved Pokémon with no Mega Evolution limit.",
 			"&bullet; <a href=\"https://www.smogon.com/forums/threads/3587740/\">Mix and Mega</a>",
diff --git a/mods/mixandmega/formats-data.js b/mods/mixandmega/formats-data.js
index 302a341878..b325794eae 100644
--- a/mods/mixandmega/formats-data.js
+++ b/mods/mixandmega/formats-data.js
@@ -9,6 +9,10 @@ exports.BattleFormatsData = {
 		inherit: true,
 		tier: "OU",
 	},
+	cresselia: {
+		inherit: true,
+		tier: "Uber",
+	},
 	darkrai: {
 		inherit: true,
 		tier: "OU",