diff --git a/libuavcan/include/uavcan/node/service_client.hpp b/libuavcan/include/uavcan/node/service_client.hpp
index db8b392dba..e9bad63729 100644
--- a/libuavcan/include/uavcan/node/service_client.hpp
+++ b/libuavcan/include/uavcan/node/service_client.hpp
@@ -159,7 +159,7 @@ private:
 
     void invokeCallback(ServiceCallResultType& result);
 
-    void handleReceivedDataStruct(ReceivedDataStructure<ResponseType>& response);
+    virtual void handleReceivedDataStruct(ReceivedDataStructure<ResponseType>& response);
 
     virtual void handleDeadline(MonotonicTime);