diff --git a/server/named_pipe.c b/server/named_pipe.c
index 2141f44..a98041e 100644
--- a/server/named_pipe.c
+++ b/server/named_pipe.c
@@ -863,6 +863,8 @@
         return 0;
     }
 
+    if (!(write_end->flags & NAMED_PIPE_MESSAGE_STREAM_WRITE) && !get_req_data_size()) return 1;
+
     if (!(message = mem_alloc( sizeof(*message) ))) return 0;
     message->async = (struct async *)grab_object( async );
     message->iosb = async_get_iosb( async );