diff --git a/server/src/com/cloud/network/ExternalNetworkManagerImpl.java b/server/src/com/cloud/network/ExternalNetworkManagerImpl.java
index 41a5efc694b..65f51bbbdb2 100644
--- a/server/src/com/cloud/network/ExternalNetworkManagerImpl.java
+++ b/server/src/com/cloud/network/ExternalNetworkManagerImpl.java
@@ -233,6 +233,10 @@ protected class ExternalNetworkUsageTask implements Runnable {
 						NicVO nic = _nicDao.findById(mapping.getNicId());
 						String loadBalancingIpAddress = nic.getIp4Address();
 						bytesSentAndReceived = answer.ipBytes.get(loadBalancingIpAddress);
+						
+						if (bytesSentAndReceived != null) {
+							bytesSentAndReceived[0] = 0;
+						}
 					}
 				} else {
 					bytesSentAndReceived = answer.ipBytes.get(publicIp);