diff --git a/mybatis-flex-codegen/src/main/java/com/mybatisflex/codegen/entity/Column.java b/mybatis-flex-codegen/src/main/java/com/mybatisflex/codegen/entity/Column.java
index 4a3feef3..af87d4d8 100644
--- a/mybatis-flex-codegen/src/main/java/com/mybatisflex/codegen/entity/Column.java
+++ b/mybatis-flex-codegen/src/main/java/com/mybatisflex/codegen/entity/Column.java
@@ -57,7 +57,7 @@ public class Column {
     /**
      * 是否自增。
      */
-    private Boolean isAutoIncrement;
+    private boolean isAutoIncrement;
 
     /**
      * 是否需要生成 @Column 注解。