diff --git a/cpp11/zone.hpp b/cpp11/zone.hpp
index b7fbf5b4..07fd678b 100644
--- a/cpp11/zone.hpp
+++ b/cpp11/zone.hpp
@@ -133,6 +133,7 @@ private:
 					::free(c);
 					c = n;
 				} else {
+					head_ = c;
 					break;
 				}
 			}