diff --git a/src/MaaWpfGui/Main/AsstProxy.cs b/src/MaaWpfGui/Main/AsstProxy.cs
index 004693a027..659bc8ff4f 100644
--- a/src/MaaWpfGui/Main/AsstProxy.cs
+++ b/src/MaaWpfGui/Main/AsstProxy.cs
@@ -1274,7 +1274,7 @@ namespace MaaWpfGui.Main
 
             // normal -> [host]:[port]
             string[] addresses = address.Split(':');
-            if (address.Length != 2)
+            if (addresses.Length != 2)
             {
                 return false;
             }