diff --git a/mozilla/dom/public/idl/Makefile.in b/mozilla/dom/public/idl/Makefile.in
index 6e4d5e91cf1..56faadb0936 100644
--- a/mozilla/dom/public/idl/Makefile.in
+++ b/mozilla/dom/public/idl/Makefile.in
@@ -26,7 +26,7 @@ VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS		= base core html events stylesheets views css range xbl xul
+DIRS		= base core html events stylesheets views css traversal range xbl xul
 
 include $(topsrcdir)/config/rules.mk
 
diff --git a/mozilla/dom/public/idl/makefile.win b/mozilla/dom/public/idl/makefile.win
index 20daa5f37d7..94a1adb2163 100644
--- a/mozilla/dom/public/idl/makefile.win
+++ b/mozilla/dom/public/idl/makefile.win
@@ -22,7 +22,7 @@
 DEPTH=..\..\..
 
 
-DIRS=base core html events stylesheets views css range xbl xul
+DIRS=base core html events stylesheets views css traversal range xbl xul
 
 include <$(DEPTH)\config\rules.mak>