diff --git a/src/check.sh b/src/check.sh
index e45ea71..b40417b 100644
--- a/src/check.sh
+++ b/src/check.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -u
+set -Eeuo pipefail
 
 [ ! -f "/run/qemu.pid" ] && echo "QEMU not running yet.." && exit 0
 [ -f "/run/qemu.count" ] && echo "QEMU is shutting down.." && exit 1