diff --git a/apps/newoptical/src/test/java/org/onosproject/newoptical/OpticalConnectivityTest.java b/apps/newoptical/src/test/java/org/onosproject/newoptical/OpticalConnectivityTest.java
index 1202db3..4f122e1 100644
--- a/apps/newoptical/src/test/java/org/onosproject/newoptical/OpticalConnectivityTest.java
+++ b/apps/newoptical/src/test/java/org/onosproject/newoptical/OpticalConnectivityTest.java
@@ -20,6 +20,7 @@
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
+import org.onlab.graph.Weight;
 import org.onlab.util.Bandwidth;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.DefaultApplicationId;
@@ -287,5 +288,10 @@
         public double cost() {
             return 0;
         }
+
+        @Override
+        public Weight weight() {
+            return null;
+        }
     }
 }
\ No newline at end of file