diff --git a/game/src/main/java/org/toop/game/reversi/ReversiAI.java b/game/src/main/java/org/toop/game/reversi/ReversiAI.java
index 495db52..2fc78d5 100644
--- a/game/src/main/java/org/toop/game/reversi/ReversiAI.java
+++ b/game/src/main/java/org/toop/game/reversi/ReversiAI.java
@@ -8,6 +8,7 @@ public final class ReversiAI extends AI<Reversi> {
 	public Move findBestMove(Reversi game, int depth) {
         Move[] moves = game.getLegalMoves();
         int inty = (int)(Math.random() * moves.length-.5f);
+        if (moves.length == 0) return null;
 		return moves[inty];
 	}
 }