diff --git a/ep0099/ep0099.go b/ep0099/ep0099.go
index 964640f..df267a9 100644
--- a/ep0099/ep0099.go
+++ b/ep0099/ep0099.go
@@ -87,7 +87,10 @@ func (s State) String() string {
 // Reset resets the registers to the default values.
 func (d *Dev) reset() error {
 	for channel := range d.state {
-		d.Off(channel)
+		err := d.Off(channel)
+		if err != nil {
+			return err
+		}
 	}
 	return nil
 }