diff --git a/game/score.go b/game/score.go
index ac00af7..d958059 100644
--- a/game/score.go
+++ b/game/score.go
@@ -5,7 +5,7 @@ package game
 const SCORE_MAX Score = 9999999
 
 // Score is a running total of points earned.
-// It’s a distinct type (over uint32) to prevent mixing raw integers with scores.
+// It's a distinct type (over uint32) to prevent mixing raw integers with scores.
 type Score uint32
 
 // Lines adds points for clearing a number of lines at once.