diff --git a/examples/echo/test.ml b/examples/echo/test.ml
index a7b006d..c5b9b00 100644
--- a/examples/echo/test.ml
+++ b/examples/echo/test.ml
@@ -48,6 +48,7 @@ let do_request ~handler request =
   |> function | Ok v -> v | Error e -> failwith (Printf.sprintf "Could not reply request: %s" (Ocaml_protoc_plugin.Result.show_error e))
 
 let () =
+  let name = Echo.Echo.package_service_name in
   let request = mk_request () in
   let reply = do_request ~handler:handle_request request in
-  Printf.printf "Reply: %s\n" reply
+  Printf.printf "Reply to %s: %s\n" name reply
diff --git a/src/plugin/emit.ml b/src/plugin/emit.ml
index cf1dbb8..db656bb 100644
--- a/src/plugin/emit.ml
+++ b/src/plugin/emit.ml
@@ -147,11 +147,19 @@ let emit_service_type ~scope ~comment_db ~type_db ServiceDescriptorProto.{ name;
 
   let proto_path = Scope.get_proto_path scope in
   let ocaml_service_name = Type_db.get_service type_db ~proto_path name in
+  let package_service_name =
+    match String.split_on_char ~sep:'.' proto_path with
+    | [] | "":: [] -> name
+    | "" :: packages | packages ->
+       (String.concat ~sep:"." packages) ^ "." ^ name
+  in
   let signature = Code.init () in
   let implementation = Code.init () in
   Code.emit_comment ~position:`Leading signature (Comment_db.get_service_comments comment_db ~proto_path ~name);
   Code.emit signature `Begin "module %s : sig" ocaml_service_name;
   Code.emit implementation `Begin "module %s = struct" ocaml_service_name;
+  Code.emit signature `None "val package_service_name : string";
+  Code.emit implementation `None {|let package_service_name = "%s"|} package_service_name;
 
   List.iter ~f:(emit_method ~scope:(Scope.push scope name) ~type_db signature implementation name) methods;
   Code.emit signature `End "end%s" (Code.append_deprecaton_if ~deprecated `Item "");