diff --git a/Makefile b/Makefile
index 3b9411d313..e40a535f76 100644
--- a/Makefile
+++ b/Makefile
@@ -43,6 +43,7 @@ KVM_GO_VERSION ?= $(GO_VERSION:.0=)
 
 INSTALL_SIZE ?= $(shell du out/minikube-windows-amd64.exe | cut -f1)
 BUILDROOT_BRANCH ?= 2021.02.4
+# the go version on the line below is for the ISO and does not need to be updated often
 GOLANG_OPTIONS = GO_VERSION=1.17 GO_HASH_FILE=$(PWD)/deploy/iso/minikube-iso/go.hash
 BUILDROOT_OPTIONS = BR2_EXTERNAL=../../deploy/iso/minikube-iso $(GOLANG_OPTIONS)
 REGISTRY ?= gcr.io/k8s-minikube