diff --git a/build-tooling.mk b/build-tooling.mk
index 494010b92e4..d4f936841df 100644
--- a/build-tooling.mk
+++ b/build-tooling.mk
@@ -12,6 +12,7 @@ IMG_DEFAULT_TAG := latest
 IMG_VERSION_OVERRIDE ?= $(IMG_DEFAULT_TAG)
 GOPROXY ?= "https://proxy.golang.org,direct"
 PLATFORM=local
+# check out step 2 in this documentation on how to set the COMPONENTS variable https://github.com/vmware-tanzu/build-tooling-for-integrations/blob/main/docs/build-tooling-getting-started.md
 COMPONENTS ?= capabilities/client capabilities/controller.capabilities-controller-manager.capabilities
 
 BUILD_TOOLING_CONTAINER_IMAGE ?= ghcr.io/vmware-tanzu/build-tooling