second try
diff --git a/core/build_id.mk b/core/build_id.mk
index c6af315..31f7fc1 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -20,3 +20,4 @@
 # capitalized by convention.
 
 export BUILD_ID=IMM68C
+