diff --git a/include/ircd/ctx/list.h b/include/ircd/ctx/list.h
index 71d89d41a..eb76e3759 100644
--- a/include/ircd/ctx/list.h
+++ b/include/ircd/ctx/list.h
@@ -105,6 +105,7 @@ noexcept
 	this->~list();
 	std::swap(head, o.head);
 	std::swap(tail, o.tail);
+	assert(!o.head && !o.tail);
 	return *this;
 }
 
diff --git a/ircd/server.cc b/ircd/server.cc
index a4fde6d23..91ad15428 100644
--- a/ircd/server.cc
+++ b/ircd/server.cc
@@ -1959,6 +1959,7 @@ noexcept
 	// Must have a fully associated request/tag which has committed some
 	// data to the wire to enter this routine.
 	assert(tag.committed());
+	assert(!tag.canceled());
 	assert(request.tag == &tag);
 	assert(tag.request == &request);