From fb5faeee819a775e546ea04a59cb152e2fa25c07 Mon Sep 17 00:00:00 2001
From: claw_bot <claw@jb18cm.plus>
Date: Tue, 10 Mar 2026 12:48:28 +0000
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---
 AssetManager.Services/PortfolioService.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AssetManager.Services/PortfolioService.cs b/AssetManager.Services/PortfolioService.cs
index 05ecfca..aa2dc1a 100644
--- a/AssetManager.Services/PortfolioService.cs
+++ b/AssetManager.Services/PortfolioService.cs
@@ -198,7 +198,7 @@ public class PortfolioService : IPortfolioService
             throw new Exception("User not found");
         }
 
-        string targetCurrency = user.DefaultCurrency ?? "CNY";
+        string targetCurrency = !string.IsNullOrEmpty(user.DefaultCurrency) ? user.DefaultCurrency : "CNY";
         _logger.LogInformation("用户 {UserId} 默认本位币: {Currency}", userId, targetCurrency);
         decimal totalValueInTargetCurrency = 0;
         decimal totalCostInTargetCurrency = 0;