diff --git a/drivers/pom.xml b/drivers/pom.xml
index 24e3d36..a2b8cc9 100644
--- a/drivers/pom.xml
+++ b/drivers/pom.xml
@@ -56,6 +56,7 @@
         <module>microsemi/ea1000</module>
         <module>gnmi</module>
         <module>odtn-driver</module>
+        <module>server</module>
     </modules>
 
     <!--<properties>
diff --git a/drivers/server/src/main/java/org/onosproject/drivers/server/devices/nic/DefaultNicFlowRule.java b/drivers/server/src/main/java/org/onosproject/drivers/server/devices/nic/DefaultNicFlowRule.java
index d50a2b0..cfb05ab 100644
--- a/drivers/server/src/main/java/org/onosproject/drivers/server/devices/nic/DefaultNicFlowRule.java
+++ b/drivers/server/src/main/java/org/onosproject/drivers/server/devices/nic/DefaultNicFlowRule.java
@@ -101,7 +101,7 @@
             NicRuleScope     scope) {
         super(flowRule);
 
-        checkNotNull(!Strings.isNullOrEmpty(trafficClassId),
+        checkArgument(!Strings.isNullOrEmpty(trafficClassId),
             "NIC rule's traffic class ID is NULL or empty");
         checkNotNull(interfaceName,
             "NIC rule's interface name is NULL");