diff --git a/dubbo-common/src/main/java/org/apache/dubbo/rpc/model/StubMethodDescriptor.java b/dubbo-common/src/main/java/org/apache/dubbo/rpc/model/StubMethodDescriptor.java
index af294d35e4..a98ef742f2 100644
--- a/dubbo-common/src/main/java/org/apache/dubbo/rpc/model/StubMethodDescriptor.java
+++ b/dubbo-common/src/main/java/org/apache/dubbo/rpc/model/StubMethodDescriptor.java
@@ -63,7 +63,7 @@ public class StubMethodDescriptor implements MethodDescriptor, PackableMethod {
         this.returnClass = responseClass;
         this.paramDesc = ReflectUtils.getDesc(parameterClasses);
         this.compatibleParamSignatures = Stream.of(parameterClasses).map(Class::getName).toArray(String[]::new);
-        this.returnTypes = new Type[]{requestClass, requestClass};
+        this.returnTypes = new Type[]{responseClass, responseClass};
         serviceDescriptor.addMethod(this);
     }