diff --git a/drivers/gpio/button_driver_test.go b/drivers/gpio/button_driver_test.go
index 050b3c2a..a36642f8 100644
--- a/drivers/gpio/button_driver_test.go
+++ b/drivers/gpio/button_driver_test.go
@@ -91,13 +91,13 @@ func TestButtonDriverStart(t *testing.T) {
 		sem <- true
 	})
 
+	d.halt <- true
+
 	a.TestAdaptorDigitalRead(func() (val int, err error) {
 		val = 1
 		return
 	})
 
-	d.halt <- true
-
 	select {
 	case <-sem:
 		t.Errorf("Button Event \"Press\" should not published")