diff --git a/datanode/sqlsubscribers/position.go b/datanode/sqlsubscribers/position.go
index 4d3527fd1d..0747cc6c3d 100644
--- a/datanode/sqlsubscribers/position.go
+++ b/datanode/sqlsubscribers/position.go
@@ -59,6 +59,7 @@ type positionSettlement interface {
 type lossSocialization interface {
 	positionEventBase
 	Amount() *num.Int
+	IsFunding() bool
 }
 
 type settleDistressed interface {