diff --git a/adapter/provider/parser.go b/adapter/provider/parser.go
index f6200fdd..1668ccf9 100644
--- a/adapter/provider/parser.go
+++ b/adapter/provider/parser.go
@@ -18,8 +18,8 @@ var (
 
 type healthCheckSchema struct {
 	Enable         bool   `provider:"enable"`
-	URL            string `provider:"url"`
-	Interval       int    `provider:"interval"`
+	URL            string `provider:"url,omitempty"`
+	Interval       int    `provider:"interval,omitempty"`
 	TestTimeout    int    `provider:"timeout,omitempty"`
 	Lazy           bool   `provider:"lazy,omitempty"`
 	ExpectedStatus string `provider:"expected-status,omitempty"`