diff --git a/mininet/node.py b/mininet/node.py
index b0ad36d..c8d34e4 100644
--- a/mininet/node.py
+++ b/mininet/node.py
@@ -702,8 +702,8 @@ class CPULimitedHost( Host ):
            args: Popen() args, single list, or string
            kwargs: Popen() keyword args"""
         # Tell mnexec to execute command in our cgroup
-        mncmd = [ 'mnexec', '-g', self.name,
-                  '-da', str( self.pid ) ]
+        mncmd = kwargs.pop( 'mncmd', [ 'mnexec', '-g', self.name,
+                                       '-da', str( self.pid ) ] )
         # if our cgroup is not given any cpu time,
         # we cannot assign the RR Scheduler.
         if self.sched == 'rt':