diff --git a/toolkit/components/browser/moz.build b/toolkit/components/browser/moz.build
index a3cea2eddcd086e530f67d7bdd4de9aacc69781d..903390a3c86bc6d4973867f6dd0113a4b9d8b2cf 100644
--- a/toolkit/components/browser/moz.build
+++ b/toolkit/components/browser/moz.build
@@ -39,5 +39,3 @@ EXPORTS += [
     "nsEmbedCID.h",
     "nsWebBrowser.h",
 ]
-
-REQUIRES_UNIFIED_BUILD = True