diff --git a/config/validate_test.go b/config/validate_test.go
index fd0db132..4cb8c935 100644
--- a/config/validate_test.go
+++ b/config/validate_test.go
@@ -4,6 +4,9 @@ import (
 	"fmt"
 	"strings"
 	"testing"
+
+	yaml "github.com/cloudfoundry-incubator/candiedyaml"
+	"github.com/rancher/os/util"
 )
 
 func testValidate(t *testing.T, cfg []byte, contains string) {
@@ -26,4 +29,14 @@ func TestValidate(t *testing.T) {
 `), "")
 	testValidate(t, []byte("bad_key: {}"), "Additional property bad_key is not allowed")
 	testValidate(t, []byte("rancher: []"), "rancher: Invalid type. Expected: object, given: array")
+
+	var fullConfig map[string]interface{}
+	if err := util.ConvertIgnoreOmitEmpty(CloudConfig{}, &fullConfig); err != nil {
+		t.Fatal(err)
+	}
+	fullConfigBytes, err := yaml.Marshal(fullConfig)
+	if err != nil {
+		t.Fatal(err)
+	}
+	testValidate(t, fullConfigBytes, "")
 }