diff --git a/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoNamespaces.java b/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoNamespaces.java
index 7c4cac5..38214d3 100644
--- a/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoNamespaces.java
+++ b/core/store/serializers/src/main/java/org/onlab/onos/store/serializers/KryoNamespaces.java
@@ -26,6 +26,7 @@
 import org.onlab.onos.net.device.DefaultDeviceDescription;
 import org.onlab.onos.net.device.DefaultPortDescription;
 import org.onlab.onos.net.flow.DefaultFlowRule;
+import org.onlab.onos.net.flow.FlowId;
 import org.onlab.onos.net.host.DefaultHostDescription;
 import org.onlab.onos.net.host.HostDescription;
 import org.onlab.onos.net.link.DefaultLinkDescription;
@@ -86,7 +87,8 @@
                     HostId.class,
                     HostDescription.class,
                     DefaultHostDescription.class,
-                    DefaultFlowRule.class
+                    DefaultFlowRule.class,
+                    FlowId.class
                     )
             .register(URI.class, new URISerializer())
             .register(NodeId.class, new NodeIdSerializer())
diff --git a/core/store/serializers/src/test/java/org/onlab/onos/store/serializers/KryoSerializerTest.java b/core/store/serializers/src/test/java/org/onlab/onos/store/serializers/KryoSerializerTest.java
index ac427cc..f76513d 100644
--- a/core/store/serializers/src/test/java/org/onlab/onos/store/serializers/KryoSerializerTest.java
+++ b/core/store/serializers/src/test/java/org/onlab/onos/store/serializers/KryoSerializerTest.java
@@ -25,6 +25,7 @@
 import org.onlab.onos.net.LinkKey;
 import org.onlab.onos.net.PortNumber;
 import org.onlab.onos.net.SparseAnnotations;
+import org.onlab.onos.net.flow.FlowId;
 import org.onlab.onos.net.provider.ProviderId;
 import org.onlab.packet.ChassisId;
 import org.onlab.packet.IpAddress;
@@ -192,6 +193,11 @@
     }
 
     @Test
+    public void testFlowId() {
+        testSerialized(FlowId.valueOf(0x12345678L));
+    }
+
+    @Test
     public void testAnnotations() {
         // Annotations does not have equals defined, manually test equality
         final byte[] a1Bytes = serializer.encode(A1);