diff --git a/src/main/java/com/peanut/modules/book/entity/ShopProduct.java b/src/main/java/com/peanut/modules/book/entity/ShopProduct.java
index f9633996..7bcf239c 100644
--- a/src/main/java/com/peanut/modules/book/entity/ShopProduct.java
+++ b/src/main/java/com/peanut/modules/book/entity/ShopProduct.java
@@ -138,7 +138,7 @@ public class ShopProduct implements Serializable {
     /**
      * 是否包邮 0：包邮 ，1：不包邮
      */
-    private Object isFreeMail;
+    private Integer isFreeMail;
 
     /**
      * 绑定电子书id,