diff --git a/plugins/hosts/bsd/host.rb b/plugins/hosts/bsd/host.rb
index a8dc08504..c31b3e6ea 100644
--- a/plugins/hosts/bsd/host.rb
+++ b/plugins/hosts/bsd/host.rb
@@ -122,7 +122,7 @@ module VagrantPlugins
         output.split("\n").each do |line|
           line.gsub!('"', '\"')
           line.gsub!("'", "'\\\\''")
-          system(%Q[sudo su root -c "echo '#{line}' >> /etc/exports"])
+          system(%Q[sudo -s -- "echo '#{line}' >> /etc/exports"])
         end
 
         # We run restart here instead of "update" just in case nfsd