diff --git a/templates/apc.ini.j2 b/templates/apc.ini.j2
index 92f4920..468c27a 100644
--- a/templates/apc.ini.j2
+++ b/templates/apc.ini.j2
@@ -1,4 +1,5 @@
 {% if php_apc_enabled_in_ini %}
+extension=apcu.so
 extension=apc.so
 {% endif %}
 apc.shm_size={{ php_apc_shm_size }}