diff --git a/common/net/address_test.go b/common/net/address_test.go
index 567ff506c..b3ed49497 100644
--- a/common/net/address_test.go
+++ b/common/net/address_test.go
@@ -104,18 +104,27 @@ func TestIPOrDomain(t *testing.T) {
 
 func BenchmarkParseAddressIPv4(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_ = ParseAddress("8.8.8.8")
+		addr := ParseAddress("8.8.8.8")
+		if addr.Family() != AddressFamilyIPv4 {
+			panic("not ipv4")
+		}
 	}
 }
 
 func BenchmarkParseAddressIPv6(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_ = ParseAddress("2001:4860:0:2001::68")
+		addr := ParseAddress("2001:4860:0:2001::68")
+		if addr.Family() != AddressFamilyIPv6 {
+			panic("not ipv6")
+		}
 	}
 }
 
 func BenchmarkParseAddressDomain(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_ = ParseAddress("v2ray.com")
+		addr := ParseAddress("v2ray.com")
+		if addr.Family() != AddressFamilyDomain {
+			panic("not domain")
+		}
 	}
 }