diff --git a/charts/prometheus-node-exporter/values.yaml b/charts/prometheus-node-exporter/values.yaml
index 8951327e3dae..20dafa709c84 100644
--- a/charts/prometheus-node-exporter/values.yaml
+++ b/charts/prometheus-node-exporter/values.yaml
@@ -408,7 +408,8 @@ hostSysFsMount:
   mountPropagation: ""
 
 ## Assign a group of affinity scheduling rules
-##
+## The default nodeAffinity excludes Fargate nodes and virtual kubelets from scheduling 
+## unless overriden by hard node affinity set in the field.
 affinity: {}
 #   nodeAffinity:
 #     requiredDuringSchedulingIgnoredDuringExecution: