diff --git a/src/game.ts b/src/game.ts
index 67f95fd0c..1b5da43b0 100644
--- a/src/game.ts
+++ b/src/game.ts
@@ -78,7 +78,7 @@ export default class Game {
 	 * creatureData :		Array :		Array containing all data for the creatures
 	 *
 	 */
-	abilities: Ability[];
+	abilities: Array<Partial<Ability>[]>;
 	players: Player[];
 	creatures: Creature[];
 	traps: Trap[];