diff --git a/configurator/templates/Makefile.env b/configurator/templates/Makefile.env
index d40317f..f6066fd 100644
--- a/configurator/templates/Makefile.env
+++ b/configurator/templates/Makefile.env
@@ -1,5 +1,5 @@
-DISABLE_STATS = {{ 1 if DISABLE_STATS else 0 }}
-ACTIVATE_HTTPS = {{ 1 if ACTIVATE_HTTPS else 0 }}
-ACTIVATE_XQUEUE = {{ 1 if ACTIVATE_XQUEUE else 0 }}
-ACTIVATE_NOTES = {{ 1 if ACTIVATE_NOTES else 0 }}
-ACTIVATE_PORTAINER = {{ 1 if ACTIVATE_PORTAINER else 0 }}
+DISABLE_STATS ?= {{ 1 if DISABLE_STATS else 0 }}
+ACTIVATE_HTTPS ?= {{ 1 if ACTIVATE_HTTPS else 0 }}
+ACTIVATE_XQUEUE ?= {{ 1 if ACTIVATE_XQUEUE else 0 }}
+ACTIVATE_NOTES ?= {{ 1 if ACTIVATE_NOTES else 0 }}
+ACTIVATE_PORTAINER ?= {{ 1 if ACTIVATE_PORTAINER else 0 }}