diff --git a/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/OFOxmTest.java b/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/OFOxmTest.java
index 8482886..04034cc 100644
--- a/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/OFOxmTest.java
+++ b/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/OFOxmTest.java
@@ -59,4 +59,6 @@
         OFOxm<IPv4Address> canonical = ipv4SrcMasked.getCanonical();
         assertEquals(ipv4SrcMasked, canonical);
     }
+
+
 }
diff --git a/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIteration13Test.java b/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIteration13Test.java
index b654a53..9656406 100644
--- a/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIteration13Test.java
+++ b/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIteration13Test.java
@@ -1,10 +1,22 @@
 package org.projectfloodlight.protocol.match;
 
+import org.junit.Test;
 import org.projectfloodlight.openflow.protocol.OFFactories;
 import org.projectfloodlight.openflow.protocol.OFVersion;
+import org.projectfloodlight.openflow.protocol.match.Match;
+import org.projectfloodlight.openflow.protocol.match.MatchField;
+import org.projectfloodlight.openflow.types.U64;
 
 public class MatchFieldIteration13Test extends MatchFieldIterationBase {
     public MatchFieldIteration13Test() {
         super(OFFactories.getFactory(OFVersion.OF_13));
     }
+
+    @Test
+    public void matchCircuitFields()
+    {
+        Match.Builder builder = factory.buildMatchV3().setExact(MatchField
+                                                                        .OCH_SIGTYPE, U64.ZERO);
+
+    }
 }
diff --git a/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIterationBase.java b/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIterationBase.java
index 9c72e37..892c5a0 100644
--- a/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIterationBase.java
+++ b/java_gen/pre-written/src/test/java/org/projectfloodlight/protocol/match/MatchFieldIterationBase.java
@@ -25,7 +25,7 @@
 
 public class MatchFieldIterationBase {
 
-    private OFFactory factory;
+    protected OFFactory factory;
 
     protected MatchFieldIterationBase(OFFactory factory) {
         this.factory = factory;