diff --git a/backend/app/schemas.py b/backend/app/schemas.py
index ea63701..fd2d88e 100644
--- a/backend/app/schemas.py
+++ b/backend/app/schemas.py
@@ -645,7 +645,8 @@ class PuckWithTellPosition(BaseModel):
     puck_type: str
     puck_location_in_dewar: Optional[str]
     dewar_id: int
-    samples: List[Sample]
+    samples: Optional[List[Sample]] = None
+    tell_position: Optional[str]
 
     class Config:
         from_attributes = True