diff --git a/files/defaults.RedHat b/files/defaults.RedHat
index f3712e0..0e97b7a 100644
--- a/files/defaults.RedHat
+++ b/files/defaults.RedHat
@@ -1,4 +1,4 @@
 {%- from "isc_dhcp/map.jinja" import server with context %}
 
 # Command line options here
-DHCPDARGS=" {{ server.interfaces|join(' ') }}"
\ No newline at end of file
+DHCPDARGS=" {% for interface in server.interfaces %}{{ interface.name }}{% if not loop.last %} {% endif %}{% endfor %}"
\ No newline at end of file