diff --git a/machinesystem.capnp b/machinesystem.capnp
index 9809d35..0ea8cf8 100644
--- a/machinesystem.capnp
+++ b/machinesystem.capnp
@@ -9,9 +9,9 @@ $CSharp.namespace("FabAccessAPI.Schema");
 using General = import "general.capnp";
 using Machine = import "machine.capnp".Machine;
 
-interface MachineSystem 
+struct MachineSystem
 {
-	info @0 : Info ;
+	info @0 :Info;
     interface Info $CSharp.name("InfoInterface") {
     	getMachineList @0 () -> ( machine_list :List(Machine) );
 
diff --git a/usersystem.capnp b/usersystem.capnp
index 8b8b18e..dfcbd9e 100644
--- a/usersystem.capnp
+++ b/usersystem.capnp
@@ -9,14 +9,14 @@ $CSharp.namespace("FabAccessAPI.Schema");
 using General = import "general.capnp";
 using User = import "user.capnp".User;
 
-interface UserSystem 
+struct UserSystem
 {
-	info @0 : Info;
+	info @0 :Info;
     interface Info $CSharp.name("InfoInterface") {
     	getUserSelf @0 ( ) -> ( user :User, dummy :UInt8 = 0 );
 	}
 
-	manage @1 : Manage;
+	manage @1 :Manage;
     interface Manage $CSharp.name("ManageInterface") {
     	getUserList @0 () -> ( user_list :List(User) );