diff --git a/src/device/input/button/v1.go b/src/device/input/button/v1.go
index 9e0f47c..a91c832 100644
--- a/src/device/input/button/v1.go
+++ b/src/device/input/button/v1.go
@@ -27,7 +27,9 @@ func NewV1(src raw.Raw) V1 {
 	}
 }
 
-func (v1 V1) Close() { v1.src.Close() }
+func (v1 V1) Close() {
+	v1.src.Close()
+}
 
 func (v1 V1) Read() []Button {
 	line := v1.src.Read()