diff --git a/sandbox.mk b/sandbox.mk
index 48238b9d3..1d06bb8d1 100644
--- a/sandbox.mk
+++ b/sandbox.mk
@@ -92,7 +92,7 @@ deb $(MIRROR_UBUNTU_METHOD)://$(MIRROR_UBUNTU)$(MIRROR_UBUNTU_SUFFIX) $(UBUNTU_R
 #MOS mirrors
 $(if $(broken_mos_repo),
 # XXX: broken "perestroika" repo
-deb $(MIRROR_UBUNTU_METHOD)://$(MIRROR_UBUNTU)$(MIRROR_UBUNTU_ROOT) $(UBUNTU_RELEASE) main,
+deb $(MIRROR_UBUNTU_METHOD)://$(MIRROR_FUEL_UBUNTU)$(MIRROR_UBUNTU_ROOT) $(UBUNTU_RELEASE) main,
 # Normal MOS repos
 deb $(MIRROR_UBUNTU_METHOD)://$(MIRROR_UBUNTU)$(MIRROR_UBUNTU_ROOT) $(PRODUCT_NAME)$(PRODUCT_VERSION) main restricted
 deb $(MIRROR_UBUNTU_METHOD)://$(MIRROR_UBUNTU)$(MIRROR_UBUNTU_ROOT) $(PRODUCT_NAME)$(PRODUCT_VERSION)-security main restricted