diff --git a/libnetwork/internal/kvstore/kvstore.go b/libnetwork/internal/kvstore/kvstore.go
index 26b9af75ff1b7cfe1dd20f9f023269cc9f50927f..1efeb8e44aa1da0dbbe69885371fef3a6adb1b26 100644
--- a/libnetwork/internal/kvstore/kvstore.go
+++ b/libnetwork/internal/kvstore/kvstore.go
@@ -46,7 +46,7 @@ type Config struct {
 }
 
 // ClientTLSConfig contains data for a Client TLS configuration in the form
-//  the etcd client wants it.  Eventually we'll adapt it for ZK and Consul.
+// the etcd client wants it.  Eventually we'll adapt it for ZK and Consul.
 type ClientTLSConfig struct {
 	CertFile   string
 	KeyFile    string
@@ -108,7 +108,8 @@ type KVPair struct {
 
 // WriteOptions contains optional request parameters
 type WriteOptions struct {
-	TTL time.Duration
+	IsDir bool
+	TTL   time.Duration
 }
 
 // LockOptions contains optional request parameters