diff --git a/components/dfs/dfs_v1/filesystems/elmfat/dfs_elm.c b/components/dfs/dfs_v1/filesystems/elmfat/dfs_elm.c
index afb2a0d46d9..f6e699e197d 100644
--- a/components/dfs/dfs_v1/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/dfs_v1/filesystems/elmfat/dfs_elm.c
@@ -156,7 +156,10 @@ int dfs_elm_mount(struct dfs_filesystem *fs, unsigned long rwflag, const void *d
         /* open the root directory to test whether the fatfs is valid */
         result = f_opendir(dir, drive);
         if (result != FR_OK)
+        {
+            rt_free(dir);
             goto __err;
+        }
 
         /* mount succeed! */
         fs->data = fat;
diff --git a/components/dfs/dfs_v2/filesystems/elmfat/dfs_elm.c b/components/dfs/dfs_v2/filesystems/elmfat/dfs_elm.c
index cb1479f6ca9..38822568be5 100644
--- a/components/dfs/dfs_v2/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/dfs_v2/filesystems/elmfat/dfs_elm.c
@@ -192,7 +192,10 @@ static int dfs_elm_mount(struct dfs_mnt *mnt, unsigned long rwflag, const void *
         /* open the root directory to test whether the fatfs is valid */
         result = f_opendir(dir, drive);
         if (result != FR_OK)
+        {
+            rt_free(dir);
             goto __err;
+        }
 
         /* mount succeed! */
         mnt->data = fat;