diff --git a/samples/zephyr/overlay-skip-primary-slot-validate.conf b/samples/zephyr/overlay-skip-primary-slot-validate.conf
new file mode 100644
index 0000000..e94518e
--- /dev/null
+++ b/samples/zephyr/overlay-skip-primary-slot-validate.conf
@@ -0,0 +1,3 @@
+# Kconfig overlay for building without validating primary slot.
+
+# CONFIG_BOOT_VALIDATE_SLOT0 is not set