diff --git a/structs_test.go b/structs_test.go
index 96a5284..0b6d929 100644
--- a/structs_test.go
+++ b/structs_test.go
@@ -1430,14 +1430,14 @@ func TestPointer2Pointer(t *testing.T) {
 func TestMap_InterfaceTypeWithMapValue(t *testing.T) {
 	type A struct {
 		Name    string      `structs:"name"`
-		Ip      string      `structs:"ip"`
+		IP      string      `structs:"ip"`
 		Query   string      `structs:"query"`
 		Payload interface{} `structs:"payload"`
 	}
 
 	a := A{
 		Name:    "test",
-		Ip:      "127.0.0.1",
+		IP:      "127.0.0.1",
 		Query:   "",
 		Payload: map[string]string{"test_param": "test_param"},
 	}