diff --git a/scripts/create-uefi.sh b/scripts/create-uefi.sh
index 8211297..64a433f 100755
--- a/scripts/create-uefi.sh
+++ b/scripts/create-uefi.sh
@@ -2,6 +2,8 @@
 #! nix-shell -i bash -p parted
 
 DISK=/dev/mmcblk0
+set -e
+
 BOOT_DIR=/mnt/nixos/boot
 
 echo "Create partition table."
diff --git a/scripts/format-disk.sh b/scripts/format-disk.sh
index bdfa9d0..82d2eb5 100755
--- a/scripts/format-disk.sh
+++ b/scripts/format-disk.sh
@@ -2,6 +2,8 @@
 #! nix-shell -i bash -p parted
 
 DISK=/dev/sdb
+set -e
+
 BOOT_PARTITION="$DISK"1
 ROOT_PARTITION="$DISK"2
 ROOT_DIR=/mnt/nixos
diff --git a/scripts/rename-partitions.sh b/scripts/rename-partitions.sh
index 2139ce7..c7cd10d 100755
--- a/scripts/rename-partitions.sh
+++ b/scripts/rename-partitions.sh
@@ -1,6 +1,8 @@
 #! /usr/bin/env nix-shell
 #! nix-shell -i bash -p parted
 
+set -e
+
 rename_boot_partition() {
     echo "Rename boot partition."
     fatlabel /dev/disk/by-label/BOOTTOFRMT BOOT
diff --git a/scripts/run-command b/scripts/run-command
index f61b364..9937e0a 100755
--- a/scripts/run-command
+++ b/scripts/run-command
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 cd /home/andreas/.nixos
 
 hosts=($(echo $(nix eval .#nixosConfigurations --apply 'pkgs: builtins.concatStringsSep " " (builtins.attrNames pkgs)') | xargs))
diff --git a/scripts/update-all-machines b/scripts/update-all-machines
index 1b121c6..227cd8b 100755
--- a/scripts/update-all-machines
+++ b/scripts/update-all-machines
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 cd /home/andreas/.nixos
 
 hosts=($(echo $(nix eval .#nixosConfigurations --apply 'pkgs: builtins.concatStringsSep " " (builtins.attrNames pkgs)') | xargs))
diff --git a/scripts/update-single-machine b/scripts/update-single-machine
index ce70e59..1663257 100755
--- a/scripts/update-single-machine
+++ b/scripts/update-single-machine
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 cd /home/andreas/.nixos
 
 rsa_key="~/.nixos/secrets/ssh_keys/ansible/ansible.key"