diff --git a/README.md b/README.md
index 81918cd..99f76ed 100644
--- a/README.md
+++ b/README.md
@@ -1254,24 +1254,24 @@ type Person struct {
 ###### Instantiate model
 ```go
 person := Person {
-  Name:        "gouguoyin",
-  Age:          18,
-  Birthday1:    carbon.DateTime{carbon.Now().SubYears(18)},
-  Birthday2:    carbon.DateTimeMilli{carbon.Now().SubYears(18)},
-  Birthday3:    carbon.DateTimeMicro{carbon.Now().SubYears(18)},
-  Birthday4:    carbon.DateTimeNano{carbon.Now().SubYears(18)},
-  GraduatedAt1: carbon.Date{carbon.Now()},
-  GraduatedAt2: carbon.DateMilli{carbon.Now()},
-  GraduatedAt3: carbon.DateMicro{carbon.Now()},
-  GraduatedAt4: carbon.DateNano{carbon.Now()},
-  OperatedAt1:  carbon.Time{carbon.Now()},
-  OperatedAt2:  carbon.TimeMilli{carbon.Now()},
-  OperatedAt3:  carbon.TimeMicro{carbon.Now()},
-  OperatedAt4:  carbon.TimeNano{carbon.Now()},
-  CreatedAt1:   carbon.Timestamp{carbon.Now()},
-  CreatedAt2:   carbon.TimestampMilli{carbon.Now()},
-  CreatedAt3:   carbon.TimestampMicro{carbon.Now()},
-  CreatedAt4:   carbon.TimestampNano{carbon.Now()},
+    Name:        "gouguoyin",
+    Age:          18,
+    Birthday1:    carbon.DateTime{carbon.Now().SubYears(18)},
+    Birthday2:    carbon.DateTimeMilli{carbon.Now().SubYears(18)},
+    Birthday3:    carbon.DateTimeMicro{carbon.Now().SubYears(18)},
+    Birthday4:    carbon.DateTimeNano{carbon.Now().SubYears(18)},
+    GraduatedAt1: carbon.Date{carbon.Now()},
+    GraduatedAt2: carbon.DateMilli{carbon.Now()},
+    GraduatedAt3: carbon.DateMicro{carbon.Now()},
+    GraduatedAt4: carbon.DateNano{carbon.Now()},
+    OperatedAt1:  carbon.Time{carbon.Now()},
+    OperatedAt2:  carbon.TimeMilli{carbon.Now()},
+    OperatedAt3:  carbon.TimeMicro{carbon.Now()},
+    OperatedAt4:  carbon.TimeNano{carbon.Now()},
+    CreatedAt1:   carbon.Timestamp{carbon.Now()},
+    CreatedAt2:   carbon.TimestampMilli{carbon.Now()},
+    CreatedAt3:   carbon.TimestampMicro{carbon.Now()},
+    CreatedAt4:   carbon.TimestampNano{carbon.Now()},
 }
 ```