diff --git a/repos/os/src/server/nic_bridge/component.cc b/repos/os/src/server/nic_bridge/component.cc
index 3d55346963..6eb114381e 100644
--- a/repos/os/src/server/nic_bridge/component.cc
+++ b/repos/os/src/server/nic_bridge/component.cc
@@ -155,3 +155,13 @@ Session_component::~Session_component() {
 	vlan().mac_list.remove(&_mac_node);
 	_unset_ipv4_node();
 }
+
+
+Net::Root::Root(Genode::Env &env, Net::Nic &nic, Genode::Allocator &md_alloc,
+                Genode::Xml_node config)
+:
+	Genode::Root_component<Session_component>(env.ep(), md_alloc),
+	_mac_alloc(Mac_address(config.attribute_value("mac", Mac_address(DEFAULT_MAC)))),
+	_env(env),
+	_nic(nic),
+	_config(config) { }
diff --git a/repos/os/src/server/nic_bridge/component.h b/repos/os/src/server/nic_bridge/component.h
index 335537097d..0f717dcd81 100644
--- a/repos/os/src/server/nic_bridge/component.h
+++ b/repos/os/src/server/nic_bridge/component.h
@@ -245,10 +245,7 @@ class Net::Root : public Genode::Root_component<Net::Session_component>
 	public:
 
 		Root(Genode::Env &env, Net::Nic &nic, Genode::Allocator &md_alloc,
-		     Genode::Xml_node config)
-		: Genode::Root_component<Session_component>(env.ep(), md_alloc),
-		  _mac_alloc(Mac_address(config.attribute_value("mac", (Genode::uint8_t)DEFAULT_MAC))),
-		  _env(env), _nic(nic), _config(config) { }
+		     Genode::Xml_node config);
 };
 
 #endif /* _COMPONENT_H_ */