diff --git a/host/bbb/data.go b/host/bbb/data.go
index ce394c6..d8930c5 100644
--- a/host/bbb/data.go
+++ b/host/bbb/data.go
@@ -4,7 +4,7 @@ import (
 	"github.com/kidoman/embd/host/generic/linux/gpio"
 )
 
-var Pins = gpio.PinMap{
+var pins = gpio.PinMap{
 	&gpio.PinDesc{66, []string{"P8_07", "GPIO_66", "TIMER4"}, gpio.Normal | gpio.GPMC},
 	&gpio.PinDesc{67, []string{"P8_08", "GPIO_67", "TIMER7"}, gpio.Normal | gpio.GPMC},
 	&gpio.PinDesc{69, []string{"P8_09", "GPIO_69", "TIMER5"}, gpio.Normal | gpio.GPMC},
diff --git a/host/bbb/descriptor.go b/host/bbb/descriptor.go
index 188c5e3..a7261f5 100644
--- a/host/bbb/descriptor.go
+++ b/host/bbb/descriptor.go
@@ -11,7 +11,7 @@ type descriptor struct {
 }
 
 func (d *descriptor) GPIO() gpio.GPIO {
-	return lgpio.New(Pins)
+	return lgpio.New(pins)
 }
 
 func (d *descriptor) I2C() i2c.I2C {