diff --git a/util/m b/util/m
index 786dcce..4ec11f3 100755
--- a/util/m
+++ b/util/m
@@ -33,4 +33,12 @@ if [ -d "$cgroup" ]; then
   cg="-g $host"
 fi
 
-exec sudo mnexec -a $pid $cg $cmd
+# Check whether host should be running in a chroot dir
+rootdir="/var/run/mn/$host/root"
+if [ -d $rootdir ]; then
+    cmd="'cd `pwd`; exec $cmd'"
+    cmd="chroot $rootdir bash -c $cmd"
+fi
+
+cmd="exec sudo mnexec -a $pid $cg $cmd"
+eval $cmd