diff --git a/src/libcharon/config/peer_cfg.c b/src/libcharon/config/peer_cfg.c
index 6463c7a36..5665b66c4 100644
--- a/src/libcharon/config/peer_cfg.c
+++ b/src/libcharon/config/peer_cfg.c
@@ -235,6 +235,7 @@ METHOD(enumerator_t, child_cfgs_replace_enumerate, bool,
 		{
 			break;
 		}
+		this->wrapped->destroy(this->wrapped);
 		this->wrapped = this->added->create_enumerator(this->added);
 		this->add = TRUE;
 	}