--- a/Makefile.in
+++ b/Makefile.in
@@ -168,17 +168,17 @@ ifneq (,$(filter FasterMake+RecursiveMak
 install-manifests: faster
 .PHONY: faster
 faster: install-dist/idl
 	$(MAKE) -C faster FASTER_RECURSIVE_MAKE=1
 endif
 
 .PHONY: tup
 tup: install-manifests buildid.h
-	@$(TUP)
+	@$(TUP) $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),,--verbose)
 
 # process_install_manifest needs to be invoked with --no-remove when building
 # js as standalone because automated builds are building nspr separately and
 # that would remove the resulting files.
 # Eventually, a standalone js build would just be able to build nspr itself,
 # removing the need for the former.
 ifdef JS_STANDALONE
 NO_REMOVE=1