diff --git a/core/build_id.mk b/core/build_id.mk
index 221a2f3..e93948d 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,6 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-BUILD_ID := MASTER
-
-DISPLAY_BUILD_NUMBER := true
+export BUILD_ID=AAT72