diff --git a/core/api/src/test/java/org/onlab/onos/net/flow/criteria/CriteriaTest.java b/core/api/src/test/java/org/onlab/onos/net/flow/criteria/CriteriaTest.java
index be3db92..6a23878 100644
--- a/core/api/src/test/java/org/onlab/onos/net/flow/criteria/CriteriaTest.java
+++ b/core/api/src/test/java/org/onlab/onos/net/flow/criteria/CriteriaTest.java
@@ -96,8 +96,8 @@
     Criterion sameAsMatchLambda1 = Criteria.matchLambda(lambda1);
     Criterion matchLambda2 = Criteria.matchLambda(lambda2);
 
-    byte signalLambda1 = 1;
-    byte signalLambda2 = 2;
+    short signalLambda1 = 1;
+    short signalLambda2 = 2;
     Criterion matchSignalLambda1 = Criteria.matchOpticalSignalType(signalLambda1);
     Criterion sameAsMatchSignalLambda1 = Criteria.matchOpticalSignalType(signalLambda1);
     Criterion matchSignalLambda2 = Criteria.matchOpticalSignalType(signalLambda2);