diff --git a/mybatis-flex-solon-plugin/src/main/java/com/mybatisflex/solon/service/impl/ServiceImpl.java b/mybatis-flex-solon-plugin/src/main/java/com/mybatisflex/solon/service/impl/ServiceImpl.java
index 80ef2adc..1fa8cbd2 100644
--- a/mybatis-flex-solon-plugin/src/main/java/com/mybatisflex/solon/service/impl/ServiceImpl.java
+++ b/mybatis-flex-solon-plugin/src/main/java/com/mybatisflex/solon/service/impl/ServiceImpl.java
@@ -31,8 +31,8 @@ public class ServiceImpl<M extends BaseMapper<T>, T> implements IService<T> {
     protected M mapper;
 
     @Override
-    public BaseMapper<T> getMapper() {
-        return mapper;
+    public M getMapper() {
+        return this.mapper;
     }
 
-}
\ No newline at end of file
+}