diff --git a/issues_test.go b/issues_test.go
index 7b172d8..c6dd427 100644
--- a/issues_test.go
+++ b/issues_test.go
@@ -1480,6 +1480,48 @@ func TestIssues_223(t *testing.T) {
 	assert.StrContains(t, s, "clinics.*.doctors.*.duration value must be an integer")
 }
 
+// issues#246 类似这样的结构体和规则
+type CertStore struct {
+	Type      string   `form:"type" json:"type"`
+	Domains   []string `form:"domains" json:"domains"`
+	AutoRenew bool     `form:"auto_renew" json:"auto_renew"`
+	UserID    uint     `form:"user_id" json:"user_id" filter:"uint"`
+	DNSID     uint     `form:"dns_id" json:"dns_id" filter:"uint"`
+	WebsiteID uint     `form:"website_id" json:"website_id" filter:"uint"`
+}
+
+func (r *CertStore) Rules() map[string]string {
+	return map[string]string{
+		"type":       "required|in:P256,P384,2048,4096",
+		"domains":    "required|array",
+		"auto_renew": "required|bool",
+		"user_id":    "required|uint|exists:cert_users,id",
+		"dns_id":     "uint",
+		"website_id": "uint",
+	}
+}
+
+// https://github.com/gookit/validate/issues/246
+// 使用 uint filter时，传 null 值会报错 convert value type error
+func TestIssues_246(t *testing.T) {
+	jsonStr := `{
+    "domains": [],
+    "dns_id": null,
+    "type": "P256",
+    "user_id": null,
+    "website_id": null,
+    "auto_renew": true
+}`
+	cs := &CertStore{}
+	err := jsonutil.DecodeString(jsonStr, cs)
+	assert.NoErr(t, err)
+	dump.P(cs)
+
+	v := validate.Struct(cs)
+	assert.True(t, v.Validate())
+	dump.P(cs)
+}
+
 type mockUUID [16]byte
 
 type TestUser struct {