diff --git a/packages/frontend/test/init.ts b/packages/frontend/test/init.ts
index 3b6b4d581b..87a394a773 100644
--- a/packages/frontend/test/init.ts
+++ b/packages/frontend/test/init.ts
@@ -27,6 +27,7 @@ export const preferState: Record<string, unknown> = {
 		code: false,
 	},
 
+	mutedEmojis: [],
 };
 
 // XXX: store somehow becomes undefined in vitest?