diff --git a/mozilla/mailnews/makefiles b/mozilla/mailnews/makefiles
index 48a4efe67de..f6f56906e59 100644
--- a/mozilla/mailnews/makefiles
+++ b/mozilla/mailnews/makefiles
@@ -11,6 +11,7 @@ mailnews/base/src/Makefile
 mailnews/base/util/Makefile
 mailnews/base/build/Makefile
 mailnews/base/tests/Makefile
+mailnews/base/tests/Makefile
 mailnews/db/Makefile
 mailnews/db/mdb/Makefile
 mailnews/db/mdb/public/Makefile