diff --git a/components/dfs/dfs_v2/filesystems/devfs/devfs.c b/components/dfs/dfs_v2/filesystems/devfs/devfs.c
index b09c54eb35a..38e9a2e4550 100644
--- a/components/dfs/dfs_v2/filesystems/devfs/devfs.c
+++ b/components/dfs/dfs_v2/filesystems/devfs/devfs.c
@@ -77,6 +77,7 @@ static int dfs_devfs_open(struct dfs_file *file)
                 }
             }
         }
+        rt_free(device_name);
     }
 
     return ret;