diff --git a/make/vars.mk b/make/vars.mk
index 6e8938b..7e4a7be 100644
--- a/make/vars.mk
+++ b/make/vars.mk
@@ -52,7 +52,7 @@ $(foreach hostname,$(HOSTNAMES),$(foreach module,$(MODULES_$(hostname)),$(eval \
 	export HOST_$(module) := $(if $(filter $(HOSTNAME),$(hostname)),127.0.0.1,$(IP_ADDR_$(hostname))))))
 
 ALL_SUBDOMAINS := $(foreach module,$(ALL_MODULES),$(SUBDOMAIN_$(module)))
-SUBDOMAINS := $(foreach module,$(MODULES),$(SUBDOMAIN_$(module)))
+SUBDOMAINS := $(if $(IS_MASTER_NODE),$(ALL_SUBDOMAINS))
 NGINX_SUBDOMAINS := $(foreach module,$(NGINX_MODULES),$(SUBDOMAIN_$(module)))
 
 ENV_RULES := $(foreach module,$(MODULES),$(if $(shell test -d $(module) && echo 1),$(module)/.env))