diff --git a/mozilla/layout/base/Makefile.in b/mozilla/layout/base/Makefile.in
index db67cfa0bdf..c22a4b04d7b 100644
--- a/mozilla/layout/base/Makefile.in
+++ b/mozilla/layout/base/Makefile.in
@@ -22,7 +22,7 @@ VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = public src tests
+DIRS = public src # tests
 
 include $(topsrcdir)/config/config.mk