diff --git a/Catalogue.cs b/Catalogue.cs
index 510f9f5..5f62576 100644
--- a/Catalogue.cs
+++ b/Catalogue.cs
@@ -72,7 +72,7 @@ namespace Bücherwurm
             NextId += 1;
             var newEBook = new EBook(newBook);
             newEBook.OverwriteNullId(NextId);
-            Products.Add(newBook);
+            Products.Add(newEBook);
             NextId += 1;
         }