diff --git a/game/models.py b/game/models.py
index 51eb410..153583f 100644
--- a/game/models.py
+++ b/game/models.py
@@ -121,13 +121,10 @@ class MusicGameOrder(models.Model):
     value = models.PositiveIntegerField(default=0)
 
     def update_value(self):
-        n_right = self.musicgameanswer_set.filter(game__player=F("answer")).count()
-        if n_right == 0:
-            self.value = 1000
-        else:
-            self.value = 1000 / (
-                1 + ((n_right - 1) / (self.game.players.count() - 1)) ** 0.5
-            )
+        x = self.musicgameanswer_set.filter(game__player=F("answer")).count()
+        n = self.game.players.count()
+        n = max(3, n)
+        self.value = 1000 * 2 ** (-(x - 2) / (n - 2))
         self.save()
 
     class Meta: