diff --git a/backend/app/agent/tools.py b/backend/app/agent/tools.py
index ea71b78..8caac0e 100644
--- a/backend/app/agent/tools.py
+++ b/backend/app/agent/tools.py
@@ -119,7 +119,7 @@ def get_recent_transactions(
     """Recent transactions, newest first. Use filters to narrow down. For
     billing-cycle scoped totals prefer get_cycle_summary."""
     q = select(Transaction).where(
-        Transaction.transaction_type.notin_(
+        col(Transaction.transaction_type).notin_(
             [TransactionType.SALARY, TransactionType.DEPOSITO]
         )
     )