diff --git a/bank/account_logic.py b/bank/account_logic.py
index 70193033..84b257fe 100644
--- a/bank/account_logic.py
+++ b/bank/account_logic.py
@@ -895,7 +895,7 @@ def update_status(self) -> None:
             if not proposal:
                 # Try to cover current raw usage with investment service units
                 total_usage = slurm_acct.get_cluster_usage_total(in_hours=True)
-                if total_usage <= investment_sus:
+                if investment and (total_usage <= investment_sus):
                     LOG.debug(f"Using investment service units to cover usage with no active proposal "
                               f"for {self._account_name}")
                     investment.current_sus -= total_usage