diff --git a/docs/reference/game/change-score-by.md b/docs/reference/game/change-score-by.md
index ae8c5a83..6002d4d5 100644
--- a/docs/reference/game/change-score-by.md
+++ b/docs/reference/game/change-score-by.md
@@ -5,6 +5,9 @@ Add the amount you say to the score for the game.
 ```sig
 game.addScore(1)
 ```
+### Parameters
+
+* a [number](/reference/types/number) that means how much to add to the score. A negative number means to subtract from the score.
 
 ### Examples