diff --git a/impl/src/main/java/org/opencord/olt/impl/OltDeviceService.java b/impl/src/main/java/org/opencord/olt/impl/OltDeviceService.java
index b336c28..6b11802 100644
--- a/impl/src/main/java/org/opencord/olt/impl/OltDeviceService.java
+++ b/impl/src/main/java/org/opencord/olt/impl/OltDeviceService.java
@@ -25,6 +25,7 @@
 import org.onosproject.net.Port;
 import org.onosproject.net.PortNumber;
 import org.onosproject.net.device.DeviceService;
+import org.opencord.olt.OltDeviceServiceInterface;
 import org.opencord.sadis.BaseInformationService;
 import org.opencord.sadis.SadisService;
 import org.opencord.sadis.SubscriberAndDeviceInformation;