diff --git a/supervisor/session/coordinator.lua b/supervisor/session/coordinator.lua
index c875e05..f36414e 100644
--- a/supervisor/session/coordinator.lua
+++ b/supervisor/session/coordinator.lua
@@ -108,8 +108,6 @@ function coordinator.new_session(id, in_queue, out_queue, facility_units)
 
     -- send unit statuses
     local function _send_status()
-        self.acks.builds = false
-
         local status = {}
 
         for i = 1, #self.units do
diff --git a/supervisor/session/plc.lua b/supervisor/session/plc.lua
index 9784600..ffffeb9 100644
--- a/supervisor/session/plc.lua
+++ b/supervisor/session/plc.lua
@@ -342,7 +342,7 @@ function plc.new_session(id, for_reactor, in_queue, out_queue)
                 end
             elseif pkt.type == RPLC_TYPES.RPS_STATUS then
                 -- RPS status packet received, copy data
-                if pkt.length == 7 then
+                if pkt.length == 9 then
                     local status = pcall(_copy_rps_status, pkt.data)
                     if status then
                         -- copied in RPS status data OK
diff --git a/supervisor/startup.lua b/supervisor/startup.lua
index f809780..51fa010 100644
--- a/supervisor/startup.lua
+++ b/supervisor/startup.lua
@@ -13,7 +13,7 @@ local svsessions = require("supervisor.session.svsessions")
 local config     = require("supervisor.config")
 local supervisor = require("supervisor.supervisor")
 
-local SUPERVISOR_VERSION = "beta-v0.5.8"
+local SUPERVISOR_VERSION = "beta-v0.5.9"
 
 local print = util.print
 local println = util.println