diff --git a/server/protocol.def b/server/protocol.def
index 9e93f53..118ffc0 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -1680,6 +1680,7 @@
 
 /* Create a named pipe */
 @REQ(create_named_pipe)
+    unsigned int   access;
     unsigned int   options;
     unsigned int   flags;
     unsigned int   maxinstances;