diff --git a/rules/filesystem/fs/sbin/services b/rules/filesystem/fs/sbin/services
index cb287d5..3b2537d 100755
--- a/rules/filesystem/fs/sbin/services
+++ b/rules/filesystem/fs/sbin/services
@@ -30,7 +30,7 @@ sysinit()
     # Mount pseudo-filesystems.
     mount -t sysfs sysfs /sys &&
     mount -t proc proc /proc &&
-    mkdir /dev/shm /dev/pts &&
+    mkdir -p /dev/shm /dev/pts &&
     mount -t tmpfs -o size="$cfg_tmpfs_size" tmpfs /dev/shm &&
     mount -t devpts devpts /dev/pts &&