diff --git a/molecule/default/playbook.yml b/molecule/default/playbook.yml
index 9ca5021..e71a940 100644
--- a/molecule/default/playbook.yml
+++ b/molecule/default/playbook.yml
@@ -59,5 +59,7 @@
 
   post_tasks:
     - name: Confirm PHP configuration is correct.
-      shell: php -i | grep 'memory_limit.*192'
+      shell: |
+        set -o pipefail
+        php -i | grep 'memory_limit.*192'
       changed_when: false