diff --git a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistryDirectory.java b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistryDirectory.java
index 224b2240227..b743a1c30ef 100644
--- a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistryDirectory.java
+++ b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistryDirectory.java
@@ -778,6 +778,12 @@ public Result invoke(Invocation invocation) throws RpcException {
                     invocation instanceof RpcInvocation ? ((RpcInvocation) invocation).getInvokeMode() : null);
             copiedInvocation.setObjectAttachment(CommonConstants.GROUP_KEY, protocolServiceKey.getGroup());
             copiedInvocation.setObjectAttachment(CommonConstants.VERSION_KEY, protocolServiceKey.getVersion());
+            // When there are multiple MethodDescriptors with the same method name, the return type will be wrong
+            // same with org.apache.dubbo.rpc.stub.StubInvocationUtil.call
+            // fix https://github.com/apache/dubbo/issues/13931
+            if (invocation instanceof RpcInvocation) {
+                copiedInvocation.setReturnType(((RpcInvocation) invocation).getReturnType());
+            }
             return originInvoker.invoke(copiedInvocation);
         }