diff --git a/dns/transport/local/resolv_darwin_cgo.go b/dns/transport/local/resolv_darwin_cgo.go
index e19d087f..bbe4ccfe 100644
--- a/dns/transport/local/resolv_darwin_cgo.go
+++ b/dns/transport/local/resolv_darwin_cgo.go
@@ -20,8 +20,8 @@ import (
 )
 
 func dnsReadConfig(_ context.Context, _ string) *dnsConfig {
-	var state C.res_state
-	if C.res_ninit(state) != 0 {
+	var state C.struct___res_state
+	if C.res_ninit(&state) != 0 {
 		return &dnsConfig{
 			servers:  defaultNS,
 			search:   dnsDefaultSearch(),
diff --git a/dns/transport/local/resolv_test.go b/dns/transport/local/resolv_test.go
new file mode 100644
index 00000000..546e8408
--- /dev/null
+++ b/dns/transport/local/resolv_test.go
@@ -0,0 +1,13 @@
+package local
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDNSReadConfig(t *testing.T) {
+	t.Parallel()
+	require.NoError(t, dnsReadConfig(context.Background(), "/etc/resolv.conf").err)
+}