diff --git a/backend/innercontext/api/routines.py b/backend/innercontext/api/routines.py
index e8ce6e5..0536123 100644
--- a/backend/innercontext/api/routines.py
+++ b/backend/innercontext/api/routines.py
@@ -266,7 +266,7 @@ def _build_recent_history(session: Session) -> str:
 
 
 def _build_products_context(session: Session, time_filter: Optional[str] = None) -> str:
-    stmt = select(Product).where(Product.is_tool == False)  # noqa: E712
+    stmt = select(Product).where(Product.is_tool.is_(False))
     products = session.exec(stmt).all()
     product_ids = [p.id for p in products]
     inventory_rows = (
@@ -335,9 +335,7 @@ def _build_products_context(session: Session, time_filter: Optional[str] = None)
 def _build_inventory_context(
     session: Session, time_filter: Optional[str] = None
 ) -> str:
-    products = session.exec(
-        select(Product).where(Product.is_tool == False)
-    ).all()  # noqa: E712
+    products = session.exec(select(Product).where(Product.is_tool.is_(False))).all()
     product_ids = [p.id for p in products]
     inventory_rows = (
         session.exec(