diff --git a/plugins/network-elements/netscaler/src/com/cloud/network/resource/NetscalerResource.java b/plugins/network-elements/netscaler/src/com/cloud/network/resource/NetscalerResource.java
index c82fde2cde9..e42a9eac2b5 100644
--- a/plugins/network-elements/netscaler/src/com/cloud/network/resource/NetscalerResource.java
+++ b/plugins/network-elements/netscaler/src/com/cloud/network/resource/NetscalerResource.java
@@ -1134,10 +1134,9 @@ public class NetscalerResource implements ServerResource {
                 vserver.set_cookietimeout(null);
                 vserver.set_domainname(null);
                 if (isUpdateSite) {
-                    if ("roundrobin".equalsIgnoreCase(lbMethod)) {
-                        vserver.set_netmask(null);
-                        vserver.set_v6netmasklen(null);
-                    }
+                    // both netmask and LB method can not be specified while update so set to null
+                    vserver.set_netmask(null);
+                    vserver.set_v6netmasklen(null);
                     gslbvserver.update(client, vserver);
                 } else {
                     gslbvserver.add(client, vserver);