diff --git a/board/google/gru/Makefile b/board/google/gru/Makefile
new file mode 100644
index 0000000..9117534
--- /dev/null
+++ b/board/google/gru/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2019 Google LLC
+
+obj-y += gru.o