diff --git a/libuavcan/include/uavcan/internal/lazy_constructor.hpp b/libuavcan/include/uavcan/internal/lazy_constructor.hpp
index 25c3f8cbfe..7aeaa0f1bd 100644
--- a/libuavcan/include/uavcan/internal/lazy_constructor.hpp
+++ b/libuavcan/include/uavcan/internal/lazy_constructor.hpp
@@ -85,6 +85,7 @@ public:
         if (ptr_)
             ptr_->~T();
         ptr_ = NULL;
+        std::fill(data_, data_ + sizeof(T), 0);
     }
 
     void construct()