diff --git a/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/ServiceImpl.java b/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/ServiceImpl.java
index d81d82d7..6299368c 100644
--- a/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/ServiceImpl.java
+++ b/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/ServiceImpl.java
@@ -34,7 +34,7 @@ public class ServiceImpl<M extends BaseMapper<T>, T> implements IService<T> {
     protected M mapper;
 
     @Override
-    public BaseMapper<T> getMapper() {
+    public M getMapper() {
         return mapper;
     }