diff --git a/Makefile b/Makefile
index 76dc9078..31b38a9a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 .PHONY: build build-gateway test-ci
+TAG?=latest
 
 build:
 	./build.sh
@@ -6,3 +7,5 @@ build-gateway:
 	(cd gateway; ./build.sh latest-dev)
 test-ci:
 	./contrib/ci.sh
+ci-armhf:
+	(cd gateway; ./build.sh $(TAG)-armhf)