diff --git a/src/linker.tun/WinDivertNAT.cs b/src/linker.tun/WinDivertNAT.cs
index e036207f..3df0f648 100644
--- a/src/linker.tun/WinDivertNAT.cs
+++ b/src/linker.tun/WinDivertNAT.cs
@@ -71,10 +71,10 @@ namespace linker.tun
 
             if (OperatingSystem.IsWindows() == false || (RuntimeInformation.ProcessArchitecture != Architecture.X86 && RuntimeInformation.ProcessArchitecture != Architecture.X64))
             {
-                error = "only windows x64,x86";
+                error = "only win x64 and win x86";
                 return false;
             }
-            if (dsts == null || dsts.Length == 0)
+            if (src == null || dsts == null || dsts.Length == 0)
             {
                 error = "src is null, or dsts empty";
                 return false;
diff --git a/version.txt b/version.txt
index cf26072a..560ce861 100644
--- a/version.txt
+++ b/version.txt
@@ -1,5 +1,5 @@
 v1.7.3
-2025-04-20 17:23:15
+2025-04-20 17:31:17
 1. 优化自动分配IP
 2. 优化网卡，排除不明数据包
 3. 虚拟网卡点对网IP映射，用于解决网段冲突