diff --git a/src/dexorder/order/orderstate.py b/src/dexorder/order/orderstate.py
index 6f73486..44db7c0 100644
--- a/src/dexorder/order/orderstate.py
+++ b/src/dexorder/order/orderstate.py
@@ -178,15 +178,19 @@ class Order:
         if self.is_open:
             Order.open_orders.remove(self.key)
             Order.vault_open_orders.listremove(self.key.vault, self.key.order_index)
-            # set final fill values in the status
-            of = Order.order_filled[self.key]
-            order_log.debug(f'deleting order_filled[{self.key}]')
-            del Order.order_filled[self.key]
-            status.filledIn = of.filled.filled_in
-            status.filledOut = of.filled.filled_out
-            for i, tf in enumerate(of.tranche_filled):
-                status.trancheFilledIn[i] += of.tranche_filled[i].filled_in
-                status.trancheFilledOut[i] += of.tranche_filled[i].filled_out
+            try:
+                # set final fill values in the status
+                of = Order.order_filled[self.key]
+            except KeyError:
+                log.warning(f'While completing with status {final_state}, no order fills found for {self.key}')
+            else:
+                order_log.debug(f'deleting order_filled[{self.key}]')
+                del Order.order_filled[self.key]
+                status.filledIn = of.filled.filled_in
+                status.filledOut = of.filled.filled_out
+                for i, tf in enumerate(of.tranche_filled):
+                    status.trancheFilledIn[i] += of.tranche_filled[i].filled_in
+                    status.trancheFilledOut[i] += of.tranche_filled[i].filled_out
         Order.order_statuses[self.key] = status # set the status in order to save it
         Order.order_statuses.unload(self.key) # but then unload from memory after root promotion
         order_log.debug(f'order completed {status}')