diff --git a/sample-management-custom/caosdb-server/scripting/bin/sample_helpers/default_constants.yml b/sample-management-custom/caosdb-server/scripting/bin/sample_helpers/default_constants.yml
index de676e01d4d4b47f6689e7d18d2a4fe5b07b7913..27fa797f27093ae2a5d3944ca8e6a19b126efb5e 100644
--- a/sample-management-custom/caosdb-server/scripting/bin/sample_helpers/default_constants.yml
+++ b/sample-management-custom/caosdb-server/scripting/bin/sample_helpers/default_constants.yml
@@ -47,12 +47,12 @@ csv_column_descriptions:
 
 entity_names:
   abbreviation_prop: abbreviation
-  child_container_prop: "Child container"
+  child_container_prop: "Child_Container"
   container_label_prop: container_label
   container_rt: Container
   container_size_prop: "Container size"
   containertype_rt: ContainerType
-  custom_label_prop: "Custom label"
+  custom_label_prop: custom_label
   labelcounter_prop: counter
   labelcounter_rt: LabelCounter
   responsible_rt: Responsible