diff --git a/mozilla/dom/src/Makefile b/mozilla/dom/src/Makefile
index 00bbf677e8b..6214f692b4a 100644
--- a/mozilla/dom/src/Makefile
+++ b/mozilla/dom/src/Makefile
@@ -19,6 +19,8 @@ DEPTH=../..
 
 include $(DEPTH)/config/config.mk
 
+DIRS = core
+
 LIBRARY_NAME = jsdom
 
 DEFINES = -D_IMPL_NS_DOM