diff --git a/dom/media/moz.build b/dom/media/moz.build
index 91ad3cc59f45..ca5e1f0f2c1e 100644
--- a/dom/media/moz.build
+++ b/dom/media/moz.build
@@ -4,8 +4,6 @@
 # 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/.
 
-FILES_PER_UNIFIED_FILE = 6
-
 with Files('*'):
     BUG_COMPONENT = ('Core', 'Audio/Video')