diff --git a/shared/lib/rarity.ts b/shared/lib/rarity.ts
index 41375dd..9512d3d 100644
--- a/shared/lib/rarity.ts
+++ b/shared/lib/rarity.ts
@@ -14,7 +14,7 @@ export const RARITY_CONFIG: Record<string, { color: number; emoji: string; label
 };
 
 export function getRarityConfig(rarity: string): { color: number; emoji: string; label: string } {
-  return RARITY_CONFIG[rarity] ?? RARITY_CONFIG["C"];
+  return RARITY_CONFIG[rarity] ?? (RARITY_CONFIG["C"]!);
 }
 
 export function defaultName(path: string): string {