diff --git a/usr/local/bin/dynv6 b/usr/local/bin/dynv6
index 86edc00..b008e16 100755
--- a/usr/local/bin/dynv6
+++ b/usr/local/bin/dynv6
@@ -48,6 +48,12 @@ source_config() {
 
 apply_defaults() {
     [[ -z ${DYNV6_MAIL_ENABLED} ]] && DYNV6_MAIL_ENABLED=false;
+    [[ -z ${DYNV6_MAIL_ADDRESS} ]] && DYNV6_MAIL_ADDRESS="";
+    [[ -z ${DYNV6_TOKEN} ]] && DYNV6_TOKEN="";
+    [[ -z ${DYNV6_HOSTNAME} ]] && DYNV6_HOSTNAME="";
+    [[ -z ${DYNV6_DEVICE} ]] && DYNV6_DEVICE="";
+    [[ -z ${DYNV6_NETMASK} ]] && DYNV6_NETMASK="";
+    
 }
 check_required() {
     if [[ -z ${DYNV6_TOKEN} ]]; then