diff --git a/components/dfs/src/dfs_file.c b/components/dfs/src/dfs_file.c
index 91d39597f06d520096dc863754c21cbce1cd5233..1ed317002fa42e566f9ab9fee7f9e48bc73a8d42 100644
--- a/components/dfs/src/dfs_file.c
+++ b/components/dfs/src/dfs_file.c
@@ -234,7 +234,7 @@ int dfs_file_getdents(struct dfs_fd *fd, struct dirent *dirp, size_t nbytes)
  *
  * @param path the specified path file to be unlinked.
  *
- * @return 0 on successful, -1 on failed.
+ * @return 0 on successful, others on failed.
  */
 int dfs_file_unlink(const char *path)
 {
diff --git a/src/kservice.c b/src/kservice.c
index 1705ce5283bf6a3c5df1f9c252b22f1184b80335..5d2425d5ddd2f42aacaf04e65f8e78b4dcc7ad21 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -536,8 +536,8 @@ void rt_show_version(void)
 {
     rt_kprintf("\n \\ | /\n");
     rt_kprintf("- RT -     Thread Operating System\n");
-    rt_kprintf(" / | \\     %d.%d.%d build %s\n",
-               RT_VERSION, RT_SUBVERSION, RT_REVISION, __DATE__);
+    rt_kprintf(" / | \\     %d.%d.%d build %s %s\n",
+               RT_VERSION, RT_SUBVERSION, RT_REVISION, __DATE__, __TIME__);
     rt_kprintf(" 2006 - 2020 Copyright by rt-thread team\n");
 }
 RTM_EXPORT(rt_show_version);