diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
index 035b689ee..c18557345 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
@@ -138,7 +138,7 @@ namespace SqlSugar
                 return false;
             }
             var methodString = method.ToString();
-            if (methodString.IndexOf("GroupBy(")==0) 
+            if (methodString.IndexOf("GroupBy(")<=0) 
             {
                 return false;
             }