      // On non-XPC launchd systems, bootstrap_look_up() is MIG-based and
      // generally safe.
 diff --git a/sandbox/mac/xpc_message_server.cc b/sandbox/mac/xpc_message_server.cc
-index e161b5a..4006d47 100644
+index d811e5d..df21859 100644
 --- a/sandbox/mac/xpc_message_server.cc
 +++ b/sandbox/mac/xpc_message_server.cc
 @@ -50,7 +50,9 @@ bool XPCMessageServer::Initialize() {

diff --git a/sandbox/mac/launchd_interception_server.cc b/sandbox/mac/launchd_interception_server.cc
index f466e77..e69c7d1 100644
--- a/sandbox/mac/launchd_interception_server.cc
+++ b/sandbox/mac/launchd_interception_server.cc
@@ -169,8 +169,10 @@ void LaunchdInterceptionServer::ForwardMessage(IPCMessage request) {

 void XPCMessageServer::ReceiveMessage() {
   IPCMessage request;
+#ifndef MAS_BUILD
   int rv = xpc_pipe_receive(server_port_.get(), &request.xpc);
   if (rv) {
     LOG(ERROR) << "Failed to xpc_pipe_receive(): " << rv;
     return;
