diff --git a/mozilla/allmakefiles.sh b/mozilla/allmakefiles.sh
index f6aac0f3911..a98bbad4d63 100755
--- a/mozilla/allmakefiles.sh
+++ b/mozilla/allmakefiles.sh
@@ -727,6 +727,10 @@ fi
 if [ `echo "$MOZ_EXTENSIONS" | grep -c irc` != 0 ]; then
   add_makefiles <<END_EXTENSIONS_IRC_MAKEFILES
   extensions/irc/Makefile
+  extensions/irc/xul/Makefile
+  extensions/irc/xul/content/Makefile
+  extensions/irc/xul/locale/Makefile
+  extensions/irc/xul/locale/en-US/Makefile
 END_EXTENSIONS_IRC_MAKEFILES
 fi