diff --git a/docs/en-US/health-checks-for-lb-rules.xml b/docs/en-US/health-checks-for-lb-rules.xml
index 84cae658120..1255d29b717 100644
--- a/docs/en-US/health-checks-for-lb-rules.xml
+++ b/docs/en-US/health-checks-for-lb-rules.xml
@@ -24,7 +24,7 @@
 <section id="health-checks-for-lb-rules">
   <!-- CLOUDSTACK-443 -->
   <title>Health Checks for Load Balancer Rules</title>
-  <para>(NetScaler load balancer only)
+  <para>(NetScaler load balancer only; requires NetScaler version 10.0)
   </para>
   <para>Health checks are used in load-balanced applications to ensure that requests are forwarded
     only to running, available services.