diff --git a/examples/firmata_grove_sound_sensor.go b/examples/firmata_grove_sound_sensor.go
index 43556671..7b14a037 100644
--- a/examples/firmata_grove_sound_sensor.go
+++ b/examples/firmata_grove_sound_sensor.go
@@ -7,7 +7,7 @@ package main
 import (
 	"fmt"
 	"os"
-	
+
 	"gobot.io/x/gobot"
 	"gobot.io/x/gobot/drivers/aio"
 	"gobot.io/x/gobot/platforms/firmata"