diff --git a/src/backend/app/tasks/tasks_schemas.py b/src/backend/app/tasks/tasks_schemas.py
index 74548f7de8..bde911e32b 100644
--- a/src/backend/app/tasks/tasks_schemas.py
+++ b/src/backend/app/tasks/tasks_schemas.py
@@ -103,7 +103,7 @@ def get_centroid_from_outline(cls, v: Any, info: ValidationInfo) -> str:
     def get_lock_uid(cls, v: int, info: ValidationInfo) -> str:
         """Get lock uid from lock_holder details."""
         if lock_holder := info.data.get("lock_holder"):
-            return lock_holder.get("id")
+            return lock_holder.id
         return None
 
     @field_validator("locked_by_username", mode="before")
@@ -111,7 +111,7 @@ def get_lock_uid(cls, v: int, info: ValidationInfo) -> str:
     def get_lock_username(cls, v: str, info: ValidationInfo) -> str:
         """Get lock username from lock_holder details."""
         if lock_holder := info.data.get("lock_holder"):
-            return lock_holder.get("username")
+            return lock_holder.username
         return None