diff --git a/board/beagleboard/beaglebone/post-build.sh b/board/beagleboard/beaglebone/post-build.sh
index dc84d26eca..dcb923356d 100755
--- a/board/beagleboard/beaglebone/post-build.sh
+++ b/board/beagleboard/beaglebone/post-build.sh
@@ -1,4 +1,6 @@
 #!/bin/sh
+set -eu
+
 BOARD_DIR="$(dirname "$0")"
 
 cp "${BOARD_DIR}/uEnv.txt" "${BINARIES_DIR}/uEnv.txt"