diff --git a/api.capnp b/api.capnp
index b220ef4..1a0e9a6 100644
--- a/api.capnp
+++ b/api.capnp
@@ -26,6 +26,7 @@ using Rust = import "rust.capnp";
 $Rust.parentModule("schema");
 
 using CSharp = import "csharp.capnp";
+$CSharp.namespace("FabAccessAPI.Schema");
 
 struct FabAccess {
     permissions @0 :Permissions;
@@ -42,7 +43,7 @@ interface Machines {
     listMachines @0 () -> ( machines :List(Machine) );
     # List all machines that BFFH knows about the user has been granted at least read access on
 
-    getMachine @1 ( uuid :UUID ) -> ( machine :Machine );
+    getMachine @1 ( uuid :UUID ) -> ( machine :Machine, dummy :UInt8 = 0 );
     # Access a particular machine by known UUID. This may fail for two reasons: The user
     # has not been granted access to know the machine exists or the machine does in fact
     # not exist. In both cases the `machine` result will be a NULL-pointer
@@ -95,7 +96,7 @@ struct Machine {
 
     read @0 :Read;
     interface Read $CSharp.name("ReadInterface") {
-        info @0 () -> ( minfo :MInfo );
+        info @0 () -> ( minfo :MInfo, dummy :UInt8 = 0 );
         # Check the state of a machine.
     }
 
diff --git a/auth.capnp b/auth.capnp
index 61d2f48..6eb4aec 100644
--- a/auth.capnp
+++ b/auth.capnp
@@ -25,6 +25,9 @@
 using Rust = import "rust.capnp";
 $Rust.parentModule("schema");
 
+using CSharp = import "csharp.capnp";
+$CSharp.namespace("FabAccessAPI.Schema");
+
 struct AuthMessage {
     union {
         mechanisms @0 :List(Text);
diff --git a/connection.capnp b/connection.capnp
index 9f74ba1..a3626f7 100644
--- a/connection.capnp
+++ b/connection.capnp
@@ -25,6 +25,9 @@
 using Rust = import "rust.capnp";
 $Rust.parentModule("schema");
 
+using CSharp = import "csharp.capnp";
+$CSharp.namespace("FabAccessAPI.Schema");
+
 using Auth = import "auth.capnp";
 using Api = import "api.capnp";