diff --git a/cg/services/orders/validation/models/existing_case.py b/cg/services/orders/validation/models/existing_case.py
index 1405fec334..3bb7a508de 100644
--- a/cg/services/orders/validation/models/existing_case.py
+++ b/cg/services/orders/validation/models/existing_case.py
@@ -3,7 +3,7 @@
 
 class ExistingCase(BaseModel):
     internal_id: str
-    panels: list[str]
+    panels: list[str] | None = None
 
     @property
     def is_new(self) -> bool: