diff --git a/src/caosdb/entity.cpp b/src/caosdb/entity.cpp
index 9592a520aa3c6a36d2b351609de4216adb5d7137..74809f6d0004bae268692e03e604149f00fababe 100644
--- a/src/caosdb/entity.cpp
+++ b/src/caosdb/entity.cpp
@@ -33,11 +33,6 @@ using caosdb::utility::get_arena;
 
 Messages::~Messages() = default;
 
-// auto Messages::Append(const Message & [>message<]) -> void {
-// CAOSDB_LOG_WARN(logger_name)
-//<< "The Messages container does not implement the Append function.";
-//}
-
 Parent::Parent() : wrapped(Parent::CreateProtoParent()) {
   // TODO(fspreck) Re-enable once we have decided how to attach
   // messages to parents.
@@ -68,17 +63,6 @@ auto Parent::SetId(const std::string &id) -> void { this->wrapped->set_id(id); }
   return this->wrapped->description();
 }
 
-// auto Parents::Append(const Parent &parent) -> void {
-// auto *destination = this->wrapped->Add();
-// destination->Swap(parent.wrapped);
-
-//// Clear the originally wrapped object and return it to the Arena
-// parent.wrapped->Clear();
-
-//// set the pointer to the new object which is owned by the RepeatedPtrField
-// parent.wrapped = destination;
-//}
-
 Property::Property() : wrapped(Property::CreateProtoProperty()) {}
 
 auto Property::CreateProtoProperty() -> ProtoProperty * {