--- a/Makefile.in
+++ b/Makefile.in
@@ -56,18 +56,17 @@ endif
 endif
 
 ifdef JS_STANDALONE
 .PHONY: CLOBBER
 CLOBBER:
 else
 CLOBBER: $(topsrcdir)/CLOBBER
 	@echo 'STOP!  The CLOBBER file has changed.'
-	@echo 'Please run the build through a sanctioned build wrapper, such as'
-	@echo '"mach build" or client.mk.'
+	@echo 'Please run the build through "mach build".'
 	@exit 1
 endif
 
 $(topsrcdir)/configure: $(topsrcdir)/configure.in $(topsrcdir)/old-configure.in
 $(topsrcdir)/js/src/configure: $(topsrcdir)/js/src/configure.in $(topsrcdir)/js/src/old-configure.in
 $(topsrcdir)/configure $(topsrcdir)/js/src/configure:
 	@echo 'STOP!  $? has changed, and your configure is out of date.'
 	@echo 'Please rerun autoconf and re-configure your build directory.'