diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index 38a1813421ead9cae1672b001997155290e53b8a..cf0b2b0ef99485bbe017d98e83e7d91e2724ce57 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -221,7 +221,7 @@ struct dfs_fd *fd_get(int fd)
     d = fdt->fds[fd];
 
     /* check dfs_fd valid or not */
-    if (d->magic != DFS_FD_MAGIC)
+    if ((d == NULL) || (d->magic != DFS_FD_MAGIC))
     {
         dfs_unlock();
         return NULL;