diff --git a/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceFactory.java b/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceFactory.java
index 484d809..312c7c3 100644
--- a/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceFactory.java
+++ b/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceFactory.java
@@ -19,6 +19,7 @@
 /**
  * Abstract interface for the creation of a NETCONF device.
  */
+@FunctionalInterface
 public interface NetconfDeviceFactory {
 
     /**