diff --git a/Makefile b/Makefile
index 0ead1be..bf2b33c 100644
--- a/Makefile
+++ b/Makefile
@@ -43,11 +43,11 @@ bootstrap:
 
 up: launch mount bootstrap ssh  ## Start a VM
 
-fwd:  ## Forward app port: make app=prometheus port=9090 fwd
+fwd:  ## Forward app port: make unit=prometheus/0 port=9090 fwd
 	$(eval VMIP := $(shell multipass exec $(VM_NAME) -- hostname -I | cut -d' ' -f1))
 	echo "Opening browser: http://$(VMIP):$(port)"
 	bash -c "(sleep 1; open 'http://$(VMIP):$(port)') &"
-	multipass exec $(VM_NAME) -- juju ssh $(app)/0 -N -L 0.0.0.0:$(port):0.0.0.0:$(port)
+	multipass exec $(VM_NAME) -- juju ssh $(unit) -N -L 0.0.0.0:$(port):0.0.0.0:$(port)
 
 down:  ## Stop the VM
 	multipass down $(VM_NAME)