diff --git a/site.mk b/site.mk
index 8f57b44..26203b6 100644
--- a/site.mk
+++ b/site.mk
@@ -113,4 +113,4 @@ GLUON_PRIORITY ?= 0
 GLUON_LANGS ?= en de
 
 # Enable autoupdater
-GLUON_BRANCH := stable
+export GLUON_BRANCH := stable