diff --git a/charts/metallb/templates/deprecated_configInline.yaml b/charts/metallb/templates/deprecated_configInline.yaml
new file mode 100644
index 0000000..8a1a551
--- /dev/null
+++ b/charts/metallb/templates/deprecated_configInline.yaml
@@ -0,0 +1,3 @@
+{{- if .Values.configInline }}
+{{- fail "Starting from v0.13.0 configInline is no longer supported. Please see https://metallb.universe.tf/#backward-compatibility" }}
+{{- end }}