diff --git a/src/backend/NetAdmin/NetAdmin.Domain/Extensions/ISelectExtensions.cs b/src/backend/NetAdmin/NetAdmin.Domain/Extensions/ISelectExtensions.cs
index 0d7876f2..4b803557 100644
--- a/src/backend/NetAdmin/NetAdmin.Domain/Extensions/ISelectExtensions.cs
+++ b/src/backend/NetAdmin/NetAdmin.Domain/Extensions/ISelectExtensions.cs
@@ -1,4 +1,6 @@
+#if DBTYPE_SQLSERVER
 using FreeSql.Provider.SqlServer;
+#endif
 
 namespace NetAdmin.Domain.Extensions;