diff --git a/openstack/dns/v2/recordsets/requests.go b/openstack/dns/v2/recordsets/requests.go
index 749167c33..64df989eb 100644
--- a/openstack/dns/v2/recordsets/requests.go
+++ b/openstack/dns/v2/recordsets/requests.go
@@ -137,8 +137,6 @@ func (opts UpdateOpts) ToRecordSetUpdateMap() (map[string]interface{}, error) {
 
 	if opts.TTL > 0 {
 		b["ttl"] = opts.TTL
-	} else {
-		b["ttl"] = nil
 	}
 
 	return b, nil
diff --git a/openstack/dns/v2/recordsets/testing/fixtures.go b/openstack/dns/v2/recordsets/testing/fixtures.go
index 5e891b539..f21b0e18a 100644
--- a/openstack/dns/v2/recordsets/testing/fixtures.go
+++ b/openstack/dns/v2/recordsets/testing/fixtures.go
@@ -289,7 +289,6 @@ func HandleCreateSuccessfully(t *testing.T) {
 const UpdateRecordSetRequest = `
 {
   "description" : "Updated description",
-  "ttl" : null,
   "records" : [
       "10.1.0.2",
       "10.1.0.3"