diff --git a/charts/ocean-metric-exporter/README.md b/charts/ocean-metric-exporter/README.md
index 46f1e63..a2c7fed 100644
--- a/charts/ocean-metric-exporter/README.md
+++ b/charts/ocean-metric-exporter/README.md
@@ -26,6 +26,8 @@ helm install my-release spot/ocean-metric-exporter
 
 > NOTE: Please configure all required chart values using the `set` command line argument or a `values.yaml` file.
 
+> NOTE: Spot Ocean metric exporter fetches data from spotinst-kubernetes-cluster-controller-config ConfigMap (/secret) and therefore should be installed in the same namespace.
+
 ## Values
 
 | Key | Type | Default | Description |
diff --git a/charts/ocean-metric-exporter/README.md.gotmpl b/charts/ocean-metric-exporter/README.md.gotmpl
index cf7d1ae..96d3789 100644
--- a/charts/ocean-metric-exporter/README.md.gotmpl
+++ b/charts/ocean-metric-exporter/README.md.gotmpl
@@ -28,6 +28,8 @@ helm install my-release spot/{{ template "chart.name" . }}
 
 > NOTE: Please configure all required chart values using the `set` command line argument or a `values.yaml` file.
 
+> NOTE: Spot Ocean metric exporter fetches data from spotinst-kubernetes-cluster-controller-config ConfigMap (/secret) and therefore should be installed in the same namespace.
+
 {{ template "chart.requirementsSection" . }}
 
 {{ template "chart.valuesSection" . }}