diff --git a/components/dfs/src/dfs_file.c b/components/dfs/src/dfs_file.c
index a9e4241ac220ddcd646f465f6dac81b09c50e4a8..b18bdfaadd57041a7732a85e8cfcf9e1210e9c25 100644
--- a/components/dfs/src/dfs_file.c
+++ b/components/dfs/src/dfs_file.c
@@ -313,7 +313,7 @@ int dfs_file_flush(struct dfs_fd *fd)
  * this function will seek the offset for specified file descriptor.
  *
  * @param fd the file descriptor.
- * @param offset the offset to be seeked.
+ * @param offset the offset to be sought.
  *
  * @return the current position after seek.
  */
diff --git a/components/dfs/src/dfs_fs.c b/components/dfs/src/dfs_fs.c
index e8110e408f1b02386fb5fb5b8145342739548689..7d88fac67ad794ca0990a2c4eb363bae022e196b 100644
--- a/components/dfs/src/dfs_fs.c
+++ b/components/dfs/src/dfs_fs.c
@@ -436,7 +436,7 @@ int dfs_statfs(const char *path, struct statfs *buffer)
 	struct dfs_filesystem *fs;
 
 	fs = dfs_filesystem_lookup(path);
-	if (fs != NULL)
+	if (fs != RT_NULL)
 	{
 		if (fs->ops->statfs != RT_NULL)
 			return fs->ops->statfs(fs, buffer);