diff --git a/models_and_helper_scripts/sample-management-datamodel.yml b/models_and_helper_scripts/sample-management-datamodel.yml
index aef3b68183e47b862b3189622822247dcb8c3ee3..4d12dc6999feb0e3f5272912349392f7b699ed84 100644
--- a/models_and_helper_scripts/sample-management-datamodel.yml
+++ b/models_and_helper_scripts/sample-management-datamodel.yml
@@ -83,7 +83,7 @@ Sample:
   recommended_properties:
     Container:
     SampleType:
-    Parent_sample:
+    Parent_Sample:
       datatype: Sample
     Main User:
       datatype: Person
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 136d9ee2ebc26c81d0abf955890988892d7fef44..8761cae6a01228c593292b78ff32830eaa1dd1f5 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
@@ -70,7 +70,7 @@ entity_names:
   labelcounter_prop: counter
   labelcounter_rt: LabelCounter
   last_name_prop: last_name
-  parent_sample_prop: Parent_sample
+  parent_sample_prop: Parent_Sample
   responsible_rt: Responsible
   start_date_prop: start_date
   locality_description_prop: locality_description