diff --git a/modules/jaeger-install-elasticsearch.adoc b/modules/jaeger-install-elasticsearch.adoc
index 4a6c757c7d..d7db800de4 100644
--- a/modules/jaeger-install-elasticsearch.adoc
+++ b/modules/jaeger-install-elasticsearch.adoc
@@ -36,7 +36,12 @@ If you have already installed the Elasticsearch Operator as part of OpenShift cl
 . Click *Install*.
 
 . On the *Install Operator* page, select the *A specific namespace on the cluster* option and then select *openshift-operators-redhat* from the menu.
-
++
+[NOTE]
+====
+The Elasticsearch installation guide says you must specify the *openshift-operators-redhat* namespace for the Elasticsearch operator for {ProductName}.
+====
++
 . Select the *Update Channel* that matches your {product-title} installation.  For example, if you are installing on {product-title} version 4.6, select the 4.6 update channel.
 
 . Select the *Automatic* Approval Strategy.