diff --git a/java_gen/templates/_imports.java b/java_gen/templates/_imports.java
index ef683e6..2d93b22 100644
--- a/java_gen/templates/_imports.java
+++ b/java_gen/templates/_imports.java
@@ -16,3 +16,4 @@
 import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.buffer.ChannelBuffers;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
diff --git a/test_data/of13/flow_add.data b/test_data/of13/flow_add.data
index c9a6e35..049d797 100644
--- a/test_data/of13/flow_add.data
+++ b/test_data/of13/flow_add.data
@@ -83,7 +83,7 @@
     .setBufferId(50)
     .setOutPort(OFPort.of(6))
     .setOutGroup(8)
-    .setFlags(0)
+    .setFlags(ImmutableSet.<OFFlowModFlags>of())
     .setMatch(
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
diff --git a/test_data/of13/flow_delete.data b/test_data/of13/flow_delete.data
index e1ee667..268304c 100644
--- a/test_data/of13/flow_delete.data
+++ b/test_data/of13/flow_delete.data
@@ -83,7 +83,7 @@
     .setBufferId(50)
     .setOutPort(OFPort.of(6))
     .setOutGroup(8)
-    .setFlags(0)
+    .setFlags(ImmutableSet.<OFFlowModFlags>of())
     .setMatch(
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
diff --git a/test_data/of13/flow_delete_strict.data b/test_data/of13/flow_delete_strict.data
index 5bb0ef4..6165405 100644
--- a/test_data/of13/flow_delete_strict.data
+++ b/test_data/of13/flow_delete_strict.data
@@ -83,7 +83,7 @@
     .setBufferId(50)
     .setOutPort(OFPort.of(6))
     .setOutGroup(8)
-    .setFlags(0)
+    .setFlags(ImmutableSet.<OFFlowModFlags>of())
     .setMatch(
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
diff --git a/test_data/of13/flow_modify.data b/test_data/of13/flow_modify.data
index 199eb59..188ab3d 100644
--- a/test_data/of13/flow_modify.data
+++ b/test_data/of13/flow_modify.data
@@ -83,7 +83,7 @@
     .setBufferId(50)
     .setOutPort(OFPort.of(6))
     .setOutGroup(8)
-    .setFlags(0)
+    .setFlags(ImmutableSet.<OFFlowModFlags>of())
     .setMatch(
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))
diff --git a/test_data/of13/flow_modify_strict.data b/test_data/of13/flow_modify_strict.data
index 42a3cee..a40210a 100644
--- a/test_data/of13/flow_modify_strict.data
+++ b/test_data/of13/flow_modify_strict.data
@@ -83,7 +83,7 @@
     .setBufferId(50)
     .setOutPort(OFPort.of(6))
     .setOutGroup(8)
-    .setFlags(0)
+    .setFlags(ImmutableSet.<OFFlowModFlags>of())
     .setMatch(
         factory.buildMatch()
             .setMasked(MatchField.IN_PORT, OFPort.of(4), OFPort.of(5))