diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index d08b4a0787..c2c4ef1b42 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -978,7 +978,7 @@ static void cgroup_context_apply(
                                 "/dev/random\0" "rwm\0"
                                 "/dev/urandom\0" "rwm\0"
                                 "/dev/tty\0" "rwm\0"
-                                "/dev/pts/ptmx\0" "rw\0" /* /dev/pts/ptmx may not be duplicated, but accessed */
+                                "/dev/ptmx\0" "rwm\0"
                                 /* Allow /run/systemd/inaccessible/{chr,blk} devices for mapping InaccessiblePaths */
                                 "-/run/systemd/inaccessible/chr\0" "rwm\0"
                                 "-/run/systemd/inaccessible/blk\0" "rwm\0";
@@ -988,6 +988,7 @@ static void cgroup_context_apply(
                         NULSTR_FOREACH_PAIR(x, y, auto_devices)
                                 whitelist_device(path, x, y);
 
+                        /* PTS (/dev/pts) devices may not be duplicated, but accessed */
                         whitelist_major(path, "pts", 'c', "rw");
                 }
 
diff --git a/src/core/namespace.c b/src/core/namespace.c
index d6c1b1b2fc..e1a9d7a92d 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -523,7 +523,7 @@ static int clone_device_node(const char *d, const char *temporary_mount) {
         mac_selinux_create_file_clear();
 
         if (r < 0)
-                return -errno;
+                return log_debug_errno(errno, "mknod failed for %s: %m", d);
 
         return 0;
 }