diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java
index 47f6cbd..9e215a9 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java
@@ -559,7 +559,7 @@
         }
 
         List<Port> devPorts = srManager.deviceService.getPorts(deviceId);
-        if (devPorts != null && devPorts.size() == 0) {
+        if (devPorts == null || devPorts.size() == 0) {
             log.warn("Device {} ports not available. Unable to add MacVlan filters",
                      deviceId);
             return null;