diff --git a/packages/server/src/captures.ts b/packages/server/src/captures.ts
index 0564675..4bab16a 100644
--- a/packages/server/src/captures.ts
+++ b/packages/server/src/captures.ts
@@ -1,4 +1,4 @@
-import type { CaptureTally, Color } from '@blind-chess/shared';
+import type { CaptureTally, Color, PieceTally } from '@blind-chess/shared';
 import type { Game } from './state.js';
 
 /**
@@ -8,8 +8,8 @@ import type { Game } from './state.js';
  * no live board state, no opponent positions.
  */
 export function captureTally(game: Game, viewer: Color): CaptureTally {
-  const byYou: Record<string, number> = {};
-  const byOpponent: Record<string, number> = {};
+  const byYou: PieceTally = {};
+  const byOpponent: PieceTally = {};
   for (const rec of game.moveHistory) {
     const captured = rec.capturedPieceType;
     if (!captured) continue;