diff --git a/xpfe/components/Makefile.in b/xpfe/components/Makefile.in
index 70712322eaa..93be13c2d9e 100644
--- a/xpfe/components/Makefile.in
+++ b/xpfe/components/Makefile.in
@@ -77,6 +77,11 @@ DIRS    = \
           shistory/public \
           bookmarks/public \
           $(NULL)
+
+ifeq ($(OS_ARCH),WINNT) 
+DIRS    += alerts winhooks
+endif
+
 endif
 
 ifdef MOZ_ENABLE_XREMOTE