diff --git a/noolite.go b/noolite.go
index 723d001..94420ec 100644
--- a/noolite.go
+++ b/noolite.go
@@ -91,11 +91,13 @@ func NewNooliteAdapter(mode, bitrate, repeats uint) (*NooliteAdapter, error) {
 
 	d.Configuration(1)
 	if d.LastError() != "No error" {
+		d.Close()
 		return nil, errors.New(d.LastError())
 	}
 
 	d.Interface(0)
 	if d.LastError() != "No error" {
+		d.Close()
 		return nil, errors.New(d.LastError())
 	}