diff --git a/game.go b/game.go
index 36da945..a11bbd8 100644
--- a/game.go
+++ b/game.go
@@ -69,6 +69,7 @@ func gameDirector(screen tcell.Screen, style tcell.Style, keypresses chan int, g
 			snakeDirection(lastpress, &snakex, &snakey)
 		}
 
+		// Call it quits once the snake hits the border.
 		if snakex == 0 || snakex == screenx-1 {
 			close(gamestate)
 			return