diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficSelector.java b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficSelector.java
index 63e7e24..b840318 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficSelector.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultTrafficSelector.java
@@ -176,11 +176,17 @@
         }
 
         @Override
-        public Builder matchLambda(short lambda) {
+        public Builder matchLambda(Short lambda) {
             return add(Criteria.matchLambda(lambda));
         }
 
         @Override
+        public Builder matchOpticalSignalType(Byte signalType) {
+            return add(Criteria.matchOpticalSignalType(signalType));
+
+        }
+
+        @Override
         public TrafficSelector build() {
             return new DefaultTrafficSelector(ImmutableSet.copyOf(selector.values()));
         }