diff --git a/UnitTestProject/Modules/SwapModule/PrepaidPrincipalCloseTraceTest.cs b/UnitTestProject/Modules/SwapModule/PrepaidPrincipalCloseTraceTest.cs
index c47296e3..45e60bef 100644
--- a/UnitTestProject/Modules/SwapModule/PrepaidPrincipalCloseTraceTest.cs
+++ b/UnitTestProject/Modules/SwapModule/PrepaidPrincipalCloseTraceTest.cs
@@ -71,7 +71,8 @@ namespace YLErp.Modules.SwapModule
                 id = 1001, SwapTradeId = 1, PositionType = (int)PositionTypeFlag.Unknown,
                 InterestDirection = (int)SwapDirectionEnum.收取,
                 InterestMode = (int)InterestModeEnum.初始预付金,
-                InterestRateDefault = Rate, InterestPrincipalFix = PrepayFix,
+                // GetUnwindInterests 会用实时腿覆盖初始腿本金；部分平仓后这里应为剩余 60%。
+                InterestRateDefault = Rate, InterestPrincipalFix = PrepayRemaining,
                 PosiStartDate = Start, PosiMatuirityDate = new DateTime(2027, 7, 28),
                 IsInitial = true, Invalid = false, InterestType = (int)InterestTypeEnum.单利,
                 IsAnnualized = true, interest_rest_days = 1,