diff --git a/jitsi-auth-dovecot.sh b/jitsi-auth-dovecot.sh
index 0a77946..62e1690 100755
--- a/jitsi-auth-dovecot.sh
+++ b/jitsi-auth-dovecot.sh
@@ -612,7 +612,7 @@ EOF
    done < "/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua"
 
    if ! $(grep -q -E "^\s*VirtualHost\s+\"guest.${FQHN_HOSTNAME}\"" \
-          /etc/prosody/conf.avail/${PROSODY_EXT_MOD_PATH}.cfg.lua 2> /dev/null); then
+          /etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua 2> /dev/null); then
       cat <<EOF >> ${LOCK_DIR}/${FQHN_HOSTNAME}.cfg.lua
 
 VirtualHost "guest.${FQHN_HOSTNAME}"