diff --git a/Makefile b/Makefile
index 51d3fd2..c1fc11c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,9 @@
+# Make sure to standardize locale, regardless of the machine config
+#
+# Having a different locale broke "yes | pacman -S" to force-install
+# iptables, for example
+export LC_ALL = en_US.UTF-8
+
 ansible_run = ansible-playbook --inventory localhost, --diff ./playbook.yml ${ANSIBLE_EXTRA_ARGS}
 
 .PHONY: config
diff --git a/install.sh b/install.sh
index c771a42..b4c79ff 100755
--- a/install.sh
+++ b/install.sh
@@ -8,6 +8,12 @@
 set -o errexit
 set -o nounset
 
+# Make sure to standardize locale, regardless of the machine config
+#
+# Having a different locale broke "yes | pacman -S" to force-install
+# iptables, for example
+export LC_ALL="en_US.UTF-8"
+
 DOTDIR="/var/lib/dotfiles"
 
 os_release_file=/etc/os-release