diff --git a/roles/install_arch/tasks/main.yml b/roles/install_arch/tasks/main.yml
index bf8c3838a8ca5f95263be2e0ec533139909dfc5a..c9a4f74aa5e022180db41e84f5b078235f4bf0f3 100644
--- a/roles/install_arch/tasks/main.yml
+++ b/roles/install_arch/tasks/main.yml
@@ -165,7 +165,7 @@
   template: src=sshd_config.j2 dest=/mnt/etc/ssh/sshd_config owner=root group=root mode=0644
 
 - name: clean pacman cache
-  command: yes | chroot /mnt pacman -Scc
+  shell: set -o pipefail && yes | chroot /mnt pacman -Scc
   register: chroot_pacman_clean_cache
   changed_when: "chroot_pacman_clean_cache.rc == 0"