--- a/Makefile.in
+++ b/Makefile.in
@@ -153,17 +153,17 @@ endif
 tup:
 	$(call BUILDSTATUS,TIERS $(if $(MOZ_ARTIFACT_BUILDS),artifact )tup)
 ifdef MOZ_ARTIFACT_BUILDS
 	$(call BUILDSTATUS,TIER_START artifact)
 	$(MAKE) recurse_artifact
 	$(call BUILDSTATUS,TIER_FINISH artifact)
 endif
 	$(call BUILDSTATUS,TIER_START tup)
-	@$(TUP) $(if $(MOZ_AUTOMATION),--quiet) $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),,--verbose)
+	@$(TUP) $(if $(MOZ_AUTOMATION),--quiet) $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),,--verbose) $(topobjdir)
 	$(call BUILDSTATUS,TIER_FINISH tup)
 
 .PHONY: $(addprefix install-,$(install_manifests))
 $(addprefix install-,$(install_manifests)): install-%: $(install_manifest_depends)
 ifneq (,$(filter FasterMake+RecursiveMake,$(BUILD_BACKENDS)))
 	@# If we're using the hybrid FasterMake/RecursiveMake backend, we want
 	@# to ensure the FasterMake end doesn't have install manifests for the
 	@# same directory, because that would blow up