diff --git a/Makefile b/Makefile
index 5dcbfa809..d27b23c82 100644
--- a/Makefile
+++ b/Makefile
@@ -156,7 +156,7 @@ update-all-go-deps:
 .PHONY: docker-curr-arch
 docker-curr-arch:
 	@echo ">> Building promu and crossbuilding"
-	$(MAKE) promu
+	$(MAKE) $(PROMU)
 	$(MAKE) npm_licenses
 	@echo ">> Running promu crossbuild"
 	promu crossbuild -p $(shell go env GOHOSTOS)/$(shell go env GOHOSTARCH)
diff --git a/README.md b/README.md
index 0042793ff..4458145c1 100644
--- a/README.md
+++ b/README.md
@@ -139,6 +139,9 @@ make npm_licenses
 make common-docker-amd64
 ```
 
+Or to build an image for your machine specific architecture,
+you can run `make docker-curr-arch`
+
 ## Using Prometheus as a Go Library
 
 ### Remote Write