diff --git a/smx509/root_darwin.go b/smx509/root_darwin.go
new file mode 100644
index 0000000..4343e8c
--- /dev/null
+++ b/smx509/root_darwin.go
@@ -0,0 +1,13 @@
+package smx509
+
+import (
+	"errors"
+)
+
+func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
+	return nil, nil
+}
+
+func loadSystemRoots() (*CertPool, error) {
+	return nil, errors.New("x509: gmsm does not support darwin system root yet")
+}