diff --git dataobj/objlist.cc dataobj/objlist.cc
index 1c2dc520b9..fc564328aa 100644
--- dataobj/objlist.cc
+++ dataobj/objlist.cc
@@ -376,6 +376,26 @@ void objlist_t::sort_trees(uint8 index, uint8 count)
 }
 
 
+bool objlist_t::append(obj_t *new_obj)
+{
+	if(capacity==0) {
+		// the first one save direct
+		obj.one = new_obj;
+		top = 1;
+		capacity = 1;
+		return true;
+	}
+
+	if(top>=capacity  &&  !grow_capacity()) {
+		// memory exceeded
+		return false;
+	}
+
+	intern_insert_at(new_obj, top);
+	return true;
+}
+
+
 bool objlist_t::add(obj_t* new_obj)
 {
 	if(capacity==0) {
@@ -992,7 +1012,7 @@ void objlist_t::rdwr(loadsave_t *file, koord3d current_pos)
 			}
 
 			if(new_obj) {
-				add(new_obj);
+				append(new_obj);
 			}
 		}
 	}
diff --git dataobj/objlist.h dataobj/objlist.h
index 1e7c372cda..b890dde3b2 100644
--- dataobj/objlist.h
+++ dataobj/objlist.h
@@ -70,12 +70,10 @@ public:
 	// usually used only for copying by grund_t
 	obj_t *remove_last();
 
-	/**
-	 * this routine will automatically obey the correct order of things during
-	 * insert into objlist
-	 */
-	bool add(obj_t* obj);
+	/// This routine will automatically obey the correct order of things during insertion.
+	bool add(obj_t *obj);
 
+	bool append(obj_t *obj);
 	bool remove(const obj_t* obj);
 	bool loesche_alle(player_t *player,uint8 offset);
 	bool ist_da(const obj_t* obj) const;
diff --git vehicle/simvehicle.cc vehicle/simvehicle.cc
index 6b9387c2f6..b948375cdc 100644
--- vehicle/simvehicle.cc
+++ vehicle/simvehicle.cc
@@ -1555,7 +1555,7 @@ DBG_MESSAGE("vehicle_t::rdwr_from_convoi()","bought at %i/%i.",(purchase_time%12
 			ware_t ware(file);
 			if(  (desc==NULL  ||  ware.menge>0)  &&  welt->is_within_limits(ware.get_zielpos())  &&  ware.get_desc()  ) {
 				// also add, of the desc is unknown to find matching replacement
-				fracht.insert(ware);
+				fracht.append(ware);
 #ifdef CACHE_TRANSIT
 				if(  file->is_version_less(112, 1)  )
 #endif