diff --git a/src/mad/ruby/scripts_common.rb b/src/mad/ruby/scripts_common.rb
index 8cd3b6945a..0608923ee1 100644
--- a/src/mad/ruby/scripts_common.rb
+++ b/src/mad/ruby/scripts_common.rb
@@ -163,7 +163,13 @@ module OpenNebula
                 result = "FAILURE"
             end
 
-            msg = "#{msg_type} #{result} #{oid} #{data64}"
+            if Integer(oid) == -1
+                ts = 0
+            else
+                ts = Time.now.to_i
+            end
+
+            msg = "#{msg_type} #{result} #{oid} #{ts} #{data64}"
 
             socket_udp = UDPSocket.new()
             socket_udp.send(msg, 0, mon_address, mon_port)
diff --git a/src/mad/sh/scripts_common.sh b/src/mad/sh/scripts_common.sh
index 787c7de868..6e8ce39500 100644
--- a/src/mad/sh/scripts_common.sh
+++ b/src/mad/sh/scripts_common.sh
@@ -1062,6 +1062,12 @@ function send_to_monitor {
         msg_result="FAILURE"
     fi
 
+    if [ $msg_oid = "-1" ]; then
+        msg_ts=0
+    else
+        msg_ts=$(date +%s)
+    fi
+
     # Read monitord config
     if [ -z "${ONE_LOCATION}" ]; then
         mon_conf=/etc/one/monitord.conf
@@ -1111,6 +1117,6 @@ function send_to_monitor {
     fi
 
     # Send message
-    echo "$msg_type $msg_result $msg_oid $payload_b64" |
+    echo "$msg_type $msg_result $msg_oid $msg_ts $payload_b64" |
         nc -u -w1 $mon_address $mon_port
 }