diff --git a/dehydrated-hook-ddns-tsig.py b/dehydrated-hook-ddns-tsig.py
index e72a994..e175f98 100755
--- a/dehydrated-hook-ddns-tsig.py
+++ b/dehydrated-hook-ddns-tsig.py
@@ -266,7 +266,7 @@ def _do_create_txt(dn):
                 logger.debug(" + Creating TXT record %s -> %s returned %s" % (
                     head, tail,
                     dns.rcode.to_text(rcode)))
-                if rcode is dns.rcode.NOERROR:
+                if rcode == dns.rcode.NOERROR:
                     return dn
             except DNSException as err:
                 logger.debug("", exc_info=True)
@@ -360,7 +360,7 @@ def _do_delete_txt(dn):
                 logger.debug(" + Removing TXT record %s -> %s returned %s" % (
                     head, tail,
                     dns.rcode.to_text(rcode)))
-                if rcode is dns.rcode.NOERROR:
+                if rcode == dns.rcode.NOERROR:
                     return dn
             except DNSException as err:
                 logger.debug("", exc_info=True)