diff --git a/daemon/libnetwork/drivers/ipvlan/ipvlan.go b/daemon/libnetwork/drivers/ipvlan/ipvlan.go
index 523bb7d314..72f4c42bff 100644
--- a/daemon/libnetwork/drivers/ipvlan/ipvlan.go
+++ b/daemon/libnetwork/drivers/ipvlan/ipvlan.go
@@ -32,7 +32,6 @@ const (
 
 type driver struct {
 	networks map[string]*network
-	sync.Once
 	sync.Mutex
 	store *datastore.Store
 }
diff --git a/daemon/libnetwork/drivers/macvlan/macvlan.go b/daemon/libnetwork/drivers/macvlan/macvlan.go
index 049439576c..b0e54c85b6 100644
--- a/daemon/libnetwork/drivers/macvlan/macvlan.go
+++ b/daemon/libnetwork/drivers/macvlan/macvlan.go
@@ -26,7 +26,6 @@ const (
 
 type driver struct {
 	networks map[string]*network
-	sync.Once
 	sync.Mutex
 	store *datastore.Store
 }