diff --git a/board/stmicroelectronics/stm32f769-disco/post-build.sh b/board/stmicroelectronics/stm32f769-disco/post-build.sh
index 4510050941..293bf30cb3 100755
--- a/board/stmicroelectronics/stm32f769-disco/post-build.sh
+++ b/board/stmicroelectronics/stm32f769-disco/post-build.sh
@@ -1,4 +1,6 @@
 #!/bin/sh
+set -eu
+
 BOARD_DIR="$(dirname "$0")"
 
 # Kernel is built without devpts support