diff --git a/helm/istio/values.yaml b/helm/istio/values.yaml
index e53c81a..0b982df 100644
--- a/helm/istio/values.yaml
+++ b/helm/istio/values.yaml
@@ -1,5 +1,6 @@
-
-global:
+# "_internal_defaults_do_not_set" is a workaround for Helm limitations. Users should NOT set "._internal_defaults_do_not_set" explicitly, but rather directly set the fields internally.
+# For instance, instead of `--set _internal_defaults_do_not_set.foo=bar``, just set `--set foo=bar`.
+_internal_defaults_do_not_set:
   # Name allows overriding the release name. Generally this should not be set
   name: ""
   # revision declares which revision this gateway is a part of