diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
index 9a8d20c44..d87bd70f9 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
@@ -19,7 +19,8 @@ namespace SqlSugar
                 {
                     if (method.Method.Name == "ToList")
                     {
-                        if (method.Arguments.FirstOrDefault() is { } arg)
+                        var arg = method.Arguments.FirstOrDefault();
+                        if (arg!=null)
                         {
                             if (arg is MemberExpression member)
                             {