diff --git a/plugins/lxc/lxc_guests b/plugins/lxc/lxc_guests
index 97608d4d..39aa0220 100755
--- a/plugins/lxc/lxc_guests
+++ b/plugins/lxc/lxc_guests
@@ -112,7 +112,7 @@ get_lxc_cgroup_info() {
    local guest_name="$1"
    local field="$2"
    # lxc3 (lxc < 3: may output some warnings if there is cruft in your config dir)
-   lxc-cgroup -o /dev/stdout -l INFO -n "$guest_name" "$field" | sed 's/^.*lxc_cgroup.c:main:[0-9][0-9]* - //'
+   lxc-cgroup -o /dev/stdout -l INFO -n "$guest_name" "$field" | sed 's/^.*lxc_cgroup.c:main:[0-9][0-9]* - //' | grep -v set_config_idmaps
 }