diff --git a/dehydrated-hook-ddns-tsig.py b/dehydrated-hook-ddns-tsig.py
index e72a994..71a5d65 100755
--- a/dehydrated-hook-ddns-tsig.py
+++ b/dehydrated-hook-ddns-tsig.py
@@ -201,7 +201,7 @@ def verify_record(domain_name,
                        rtype,
                        rdata if rdata is not None else "*",
                        ns))
-        resolver.nameservers = ns
+        resolver.nameservers = [ns]
         answer = []
         try:
             answer = [_.to_text().strip('"'+"'")