diff --git a/src/dexorder/base/orderlib.py b/src/dexorder/base/orderlib.py
index 6cdb309..f80433f 100644
--- a/src/dexorder/base/orderlib.py
+++ b/src/dexorder/base/orderlib.py
@@ -75,6 +75,7 @@ SwapOrder
 @dataclass
 class SwapStatus:
     # this is an elaborated version of the on-chain status
+    fillFeeBP: int
     state: SwapOrderState
     start: int
     ocoGroup: Optional[int]
@@ -96,37 +97,40 @@ class SwapOrderStatus(SwapStatus):
     @staticmethod
     def load(obj):
         order = SwapOrder.load(obj[0])
-        state = SwapOrderState(obj[1])
-        start = obj[2]
-        ocoGroup = None if obj[3] == NO_OCO else obj[3]
-        filledIn = int(obj[4])
-        filledOut = int(obj[5])
-        trancheFilledIn = [int(f) for f in obj[6]]
-        trancheFilledOut = [int(f) for f in obj[7]]
-        return SwapOrderStatus(order, state, start, ocoGroup, filledIn, filledOut, trancheFilledIn, trancheFilledOut)
+        fillFeeBP = int(obj[1])
+        state = SwapOrderState(obj[2])
+        start = obj[3]
+        ocoGroup = None if obj[4] == NO_OCO else obj[4]
+        filledIn = int(obj[5])
+        filledOut = int(obj[6])
+        trancheFilledIn = [int(f) for f in obj[7]]
+        trancheFilledOut = [int(f) for f in obj[8]]
+        return SwapOrderStatus(order, fillFeeBP, state, start, ocoGroup, filledIn, filledOut, trancheFilledIn, trancheFilledOut)
 
     @staticmethod
     def load_from_chain(obj):
         # 0  SwapOrder order;
-        # 1  bool canceled;
-        # 2  uint32 start;
-        # 3  uint64 ocoGroup;
-        # 4  uint256 filled;  // total
-        # 5  uint256[] trancheFilled;  // sum(trancheFilled) == filled
+        # 1  int fillFeeBP
+        # 2  bool canceled;
+        # 3  uint32 start;
+        # 4  uint64 ocoGroup;
+        # 5  uint256 filled;  // total
+        # 6  uint256[] trancheFilled;  // sum(trancheFilled) == filled
 
         order = SwapOrder.load(obj[0])
-        state = SwapOrderState.Canceled if obj[1] else SwapOrderState.Open
-        start = obj[2]
-        ocoGroup = None if obj[3] == NO_OCO else obj[3]
+        fillFeeBP = obj[1]
+        state = SwapOrderState.Canceled if obj[2] else SwapOrderState.Open
+        start = obj[3]
+        ocoGroup = None if obj[4] == NO_OCO else obj[4]
         # we ignore any fill values from the on-chain struct, because we will subsequently detect the DexorderSwapFilled events and add them in
         filledIn = 0
         filledOut = 0
-        trancheFilledIn = [0 for _ in range(len(obj[5]))]
-        trancheFilledOut = [0 for _ in range(len(obj[5]))]
-        return SwapOrderStatus(order, state, start, ocoGroup, filledIn, filledOut, trancheFilledIn, trancheFilledOut)
+        trancheFilledIn = [0 for _ in range(len(obj[6]))]
+        trancheFilledOut = [0 for _ in range(len(obj[6]))]
+        return SwapOrderStatus(order, fillFeeBP, state, start, ocoGroup, filledIn, filledOut, trancheFilledIn, trancheFilledOut)
 
     def dump(self):
-        return (self.order.dump(), self.state.value, self.start, self.ocoGroup,
+        return (self.order.dump(), self.fillFeeBP, self.state.value, self.start, self.ocoGroup,
                 str(self.filledIn), str(self.filledOut),
                 [str(f) for f in self.trancheFilledIn], [str(f) for f in self.trancheFilledOut])