1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index 3e332131000e..bce933ebb29f 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -386,7 +386,7 @@ void kernel_restart_prepare(char *cmd)
 /**
  *      kernel_restart - reboot the system
  *      @cmd: pointer to buffer containing command to execute for restart
- *              or NULL
+ *              or %NULL
  *
  *      Shutdown everything and perform a clean reboot.
  *      This is not safe to call in interrupt context.