diff --git a/config/formats.js b/config/formats.js
index 621c03fc09..d7a5e3bb41 100644
--- a/config/formats.js
+++ b/config/formats.js
@@ -434,6 +434,7 @@ let Formats = [
 
 		mod: 'gen7',
 		ruleset: ['[Gen 7] OU'],
+		banlist: ['Blissey'],
 		onBeforeFaint: function (pokemon) {
 			let prevo = pokemon.baseTemplate.isMega ? this.getTemplate(pokemon.baseTemplate.baseSpecies).prevo : pokemon.baseTemplate.prevo;
 			if (!prevo || pokemon.set.ability === 'Battle Bond') return;