diff --git a/templates/lxc-ubuntu-cloud.in b/templates/lxc-ubuntu-cloud.in
index b024de8f7..47a5fcade 100644
--- a/templates/lxc-ubuntu-cloud.in
+++ b/templates/lxc-ubuntu-cloud.in
@@ -116,7 +116,7 @@ sysfs           sys          sysfs defaults  0 0
 /sys/fs/fuse/connections sys/fs/fuse/connections none bind 0 0
 /sys/kernel/debug sys/kernel/debug none bind 0 0
 /sys/kernel/security sys/kernel/security none bind 0 0
-/sys/fs/pstore sys/fs/pstore none bind 0 0
+/sys/fs/pstore sys/fs/pstore none bind,optional 0 0
 EOF
 
     # unprivileged user can't mknod these.  One day we may allow
diff --git a/templates/lxc-ubuntu.in b/templates/lxc-ubuntu.in
index 02ccbc28b..c872a839f 100644
--- a/templates/lxc-ubuntu.in
+++ b/templates/lxc-ubuntu.in
@@ -430,7 +430,7 @@ sysfs           sys          sysfs defaults  0 0
 /sys/fs/fuse/connections sys/fs/fuse/connections none bind 0 0
 /sys/kernel/debug sys/kernel/debug none bind 0 0
 /sys/kernel/security sys/kernel/security none bind 0 0
-/sys/fs/pstore sys/fs/pstore none bind 0 0
+/sys/fs/pstore sys/fs/pstore none bind,optional 0 0
 EOF
 
     if [ $? -ne 0 ]; then