diff --git a/src/zen/moz.build b/src/zen/moz.build
index d52de380d..df7f60725 100644
--- a/src/zen/moz.build
+++ b/src/zen/moz.build
@@ -15,5 +15,6 @@ DIRS += [
     "urlbar",
     "toolkit",
     "sessionstore",
+    "space-routing",
     "share",
 ]
diff --git a/src/zen/space-routing/moz.build b/src/zen/space-routing/moz.build
new file mode 100644
index 000000000..e76174503
--- /dev/null
+++ b/src/zen/space-routing/moz.build
@@ -0,0 +1,5 @@
+# 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/.
+
+