diff --git a/src/main/java/net/onrc/onos/core/matchaction/MatchActionId.java b/src/main/java/net/onrc/onos/core/matchaction/MatchActionId.java
index 86e7000..3e485af 100644
--- a/src/main/java/net/onrc/onos/core/matchaction/MatchActionId.java
+++ b/src/main/java/net/onrc/onos/core/matchaction/MatchActionId.java
@@ -2,7 +2,7 @@
 
 import net.onrc.onos.api.batchoperation.BatchOperationTarget;
 
-public class MatchActionId implements BatchOperationTarget {
+public final class MatchActionId implements BatchOperationTarget {
     private final String value;
 
     public MatchActionId(String id) {