diff --git a/.gitlab-ci/container/build-vulkan-validation.sh b/.gitlab-ci/container/build-vulkan-validation.sh
index a8760eaeaa4..ef5397b810b 100644
--- a/.gitlab-ci/container/build-vulkan-validation.sh
+++ b/.gitlab-ci/container/build-vulkan-validation.sh
@@ -5,7 +5,7 @@
 # DEBIAN_TEST_GL_TAG
 # KERNEL_ROOTFS_TAG
 
-set -ex
+set -uex
 
 VALIDATION_TAG="snapshot-2024wk39"