diff --git a/backend/src/services/types/well_completion_types.py b/backend/src/services/types/well_completion_types.py
index fbaa0214b..0df76ca7a 100644
--- a/backend/src/services/types/well_completion_types.py
+++ b/backend/src/services/types/well_completion_types.py
@@ -2,7 +2,7 @@
 from typing import Dict, List, Optional, Union
 
 
-WellCompletionAttributeType = Union[str, int, bool, None]
+WellCompletionAttributeType = Union[str, int, bool]
 
 
 class Completions(BaseModel):