diff --git a/toolkit/mozapps/downloads/tests/Makefile.in b/toolkit/mozapps/downloads/tests/Makefile.in
deleted file mode 100644
index 2a5fe66d574e..000000000000
--- a/toolkit/mozapps/downloads/tests/Makefile.in
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-include $(topsrcdir)/config/rules.mk
-
-libs:: 
-	$(INSTALL) $(topsrcdir)/testing/specialpowers/content/MockFilePicker.jsm $(DEPTH)/_tests/xpcshell/$(relativesrcdir)/unit