diff --git a/miyagi-backup.sh b/miyagi-backup.sh
index 93a6ee2..56d750f 100644
--- a/miyagi-backup.sh
+++ b/miyagi-backup.sh
@@ -629,7 +629,7 @@ wait() {
 set_dynamic_route() {
     local ddns_hostname="$SOURCEHOST"
     local gateway="$DDNS_GATEWAY"
-    local dns_server="DDNS_SERVER"
+    local dns_server="$DDNS_SERVER"
 
     if [[ -z "$ddns_hostname" || -z "$gateway" ]]; then
         log "Fehler: SOURCEHOST oder DDNS_GATEWAY nicht gesetzt"