diff --git a/apps/optical-model/src/main/java/org/onosproject/net/optical/internal/OpticalModelLoader.java b/apps/optical-model/src/main/java/org/onosproject/net/optical/internal/OpticalModelLoader.java
index 9045e24..ecdbebd 100644
--- a/apps/optical-model/src/main/java/org/onosproject/net/optical/internal/OpticalModelLoader.java
+++ b/apps/optical-model/src/main/java/org/onosproject/net/optical/internal/OpticalModelLoader.java
@@ -17,11 +17,11 @@
 
 import static org.onosproject.net.config.basics.SubjectFactories.CONNECT_POINT_SUBJECT_FACTORY;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.config.ConfigFactory;
 import org.onosproject.net.config.NetworkConfigRegistry;
@@ -39,10 +39,10 @@
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected PortConfigOperatorRegistry portOperatorRegistry;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected NetworkConfigRegistry netcfgRegistry;