diff --git a/monitoring/nagios.py b/monitoring/nagios.py
index b55a374b34f..5b6e9796b1d 100644
--- a/monitoring/nagios.py
+++ b/monitoring/nagios.py
@@ -873,7 +873,7 @@ class Nagios(object):
         pre = '[%s]' % int(time.time())
 
         post = '\n'
-        cmdstr = '%s %s %s' % (pre, cmd, post)
+        cmdstr = '%s %s%s' % (pre, cmd, post)
         self._write_command(cmdstr)
 
     def act(self):