diff --git a/kubernetes/loculus/values.schema.json b/kubernetes/loculus/values.schema.json
index 5cb2ced5f7..04d007d4b5 100644
--- a/kubernetes/loculus/values.schema.json
+++ b/kubernetes/loculus/values.schema.json
@@ -1464,7 +1464,7 @@
       "description": "An object where the keys are the lineage system names and values are links to lineage system definition files per pipeline version (See [Lineage system definitions](#lineage-system-definitions))",
       "additionalProperties": false,
       "patternProperties": {
-        "^[a-zA-Z0-9-]+$": {
+        "*.": {
           "groups": ["lineage-system-definitions"],
           "placeholder": "name",
           "type": "object",
diff --git a/kubernetes/loculus/values.yaml b/kubernetes/loculus/values.yaml
index 23335175c3..b6efcced74 100644
--- a/kubernetes/loculus/values.yaml
+++ b/kubernetes/loculus/values.yaml
@@ -52,10 +52,10 @@ logo:
   width: 100
   height: 100
 lineageSystemDefinitions:
-  pangoLineage:
+  pango_Lineage:
     1: https://raw.githubusercontent.com/loculus-project/loculus/c400348ea0ba0b8178aa43475d5c7539fc097997/preprocessing/dummy/lineage.yaml
     2: https://raw.githubusercontent.com/loculus-project/loculus/c400348ea0ba0b8178aa43475d5c7539fc097997/preprocessing/dummy/lineage.yaml
-  alternativeLineage:
+  'alternative lineage system':
     4: https://raw.githubusercontent.com/loculus-project/loculus/fe3b2974071acc9a25856d650350f8a952040a7c/preprocessing/dummy/lineage-alternative.yaml
   cchfS:
     1: https://pathoplexus.github.io/silo-lineage-hierarchy-definitions/definitions/cchf/S/2025-09-24--07-29-03Z/lineages.yaml
@@ -1660,7 +1660,7 @@ defaultOrganisms:
           autocomplete: true
           required: true
           type: string
-          lineageSystem: pangoLineage
+          lineageSystem: pango_Lineage
           options:
             - name: A
             - name: A.1
@@ -1773,7 +1773,7 @@ defaultOrganisms:
           autocomplete: true
           required: true
           type: string
-          lineageSystem: alternativeLineage
+          lineageSystem: 'alternative lineage system'
           options:
             - name: A
             - name: A.1