diff --git a/libuavcan/include/uavcan/node/abstract_node.hpp b/libuavcan/include/uavcan/node/abstract_node.hpp
index 5602b98513..1357bf7e73 100644
--- a/libuavcan/include/uavcan/node/abstract_node.hpp
+++ b/libuavcan/include/uavcan/node/abstract_node.hpp
@@ -18,6 +18,7 @@ public:
     virtual Scheduler& getScheduler() = 0;
     virtual const Scheduler& getScheduler() const = 0;
     virtual IMarshalBufferProvider& getMarshalBufferProvider() = 0;
+    virtual void registerInternalFailure(const char* msg) = 0;
 
     Dispatcher& getDispatcher()             { return getScheduler().getDispatcher(); }
     const Dispatcher& getDispatcher() const { return getScheduler().getDispatcher(); }
diff --git a/libuavcan/test/node/test_node.hpp b/libuavcan/test/node/test_node.hpp
index 2ebbc9bcc0..e978ca4d1b 100644
--- a/libuavcan/test/node/test_node.hpp
+++ b/libuavcan/test/node/test_node.hpp
@@ -23,6 +23,11 @@ struct TestNode : public uavcan::INode
         setNodeID(self_node_id);
     }
 
+    void registerInternalFailure(const char* msg)
+    {
+        std::cout << "TestNode internal failure: " << msg << std::endl;
+    }
+
     uavcan::PoolManager<1>& getAllocator() { return poolmgr; }
     uavcan::Scheduler& getScheduler() { return scheduler; }
     const uavcan::Scheduler& getScheduler() const { return scheduler; }