diff --git a/components/drivers/block/partitions/dfs.c b/components/drivers/block/partitions/dfs.c
index da4605e512b..3fdad1a1d6a 100644
--- a/components/drivers/block/partitions/dfs.c
+++ b/components/drivers/block/partitions/dfs.c
@@ -49,5 +49,7 @@ rt_err_t dfs_partition(struct rt_blk_disk *disk)
         }
     }
 
+    rt_free(sector);
+
     return RT_EOK;
 }