--- charts-original/templates/role.yaml
+++ charts/templates/role.yaml
@@ -1,3 +1,6 @@
+{{- if not (kindIs "slice" .Values.collectors) }}
+{{- fail "Collectors need to be a List since kube-state-metrics chart 3.2.2. Please check README for more information."}}
+{{- end }}
 {{- if and (eq .Values.rbac.create true) (not .Values.rbac.useExistingRole) -}}
 {{- range (split "," .Values.namespaces) }}
 ---