diff --git a/roles/pbx/defaults/main.yml b/roles/pbx/defaults/main.yml
index f49653894..5e4a70109 100644
--- a/roles/pbx/defaults/main.yml
+++ b/roles/pbx/defaults/main.yml
@@ -20,11 +20,11 @@
 
 asterisk_url: http://downloads.asterisk.org/pub/telephony/asterisk
 asterisk_src_file: asterisk-18-current.tar.gz
-asterisk_src_dir: {{ iiab_base }}/asterisk    # /opt/iiab
+asterisk_src_dir: "{{ iiab_base }}/asterisk"    # /opt/iiab
 
 freepbx_url: http://mirror.freepbx.org/modules/packages/freepbx/7.4
 freepbx_src_file: freepbx-16.0-latest.tgz    # Beta as of 2021-06-21 but looking great!  Does NOT support PHP < 7.4 (you've been warned!)  Please review https://github.com/iiab/iiab/blob/master/roles/pbx/README.rst
-freepbx_src_dir: {{ iiab_base }}/freepbx
+freepbx_src_dir: "{{ iiab_base }}/freepbx"
 freepbx_install_dir: /var/www/html/freepbx
 
 asterisk_db_host: localhost
@@ -35,4 +35,4 @@ asterisk_db_cdrdbname: asteriskcdrdb
 
 chan_dongle_url: https://github.com/wdoekes/asterisk-chan-dongle/archive
 chan_dongle_src_file: master.zip
-chan_dongle_src_dir: {{ iiab_base }}/chan_dongle
+chan_dongle_src_dir: "{{ iiab_base }}/chan_dongle"