diff --git a/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java b/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
index 3005e62dc987a685b7c6c10d82e3de3a953c195c..6bccf255687289f98d414c3cb7a0ebd70d85f1cd 100644
--- a/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
+++ b/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
@@ -519,7 +519,7 @@ public class LinkDiscoveryManager
 
         OFPhysicalPort physicalPort = remoteSwitch.getPort(remotePort);
         int srcPortState = (physicalPort != null) ? physicalPort.getState() : 0;
-        physicalPort = sw.getPort(remotePort);
+        physicalPort = sw.getPort(pi.getInPort());
         int dstPortState = (physicalPort != null) ? physicalPort.getState() : 0;
 
         // Store the time of update to this link, and push it out to routingEngine