diff --git a/tosfs/core.py b/tosfs/core.py
index 7b3d5b6..145c853 100644
--- a/tosfs/core.py
+++ b/tosfs/core.py
@@ -2177,21 +2177,6 @@ def fetch() -> bytes:
 
         return retryable_func_executor(fetch, max_retry_num=self.fs.max_retry_num)
 
-    def discard(self) -> None:
-        """Close the file without writing."""
-        self._abort_mpu()
-        self.buffer = None  # file becomes unusable
-
-    def _abort_mpu(self) -> None:
-        if self.mpu:
-            retryable_func_executor(
-                lambda: self.fs.tos_client.abort_multipart_upload(
-                    self.bucket, self.key, self.mpu.upload_id
-                ),
-                max_retry_num=self.fs.max_retry_num,
-            )
-            self.mpu = None
-
     def commit(self) -> None:
         """Complete multipart upload or PUT."""
         logger.debug("Commit %s", self)
@@ -2231,3 +2216,17 @@ def commit(self) -> None:
 
         self.buffer = None
 
+    def discard(self) -> None:
+        """Close the file without writing."""
+        self._abort_mpu()
+        self.buffer = None  # file becomes unusable
+
+    def _abort_mpu(self) -> None:
+        if self.mpu:
+            retryable_func_executor(
+                lambda: self.fs.tos_client.abort_multipart_upload(
+                    self.bucket, self.key, self.mpu.upload_id
+                ),
+                max_retry_num=self.fs.max_retry_num,
+            )
+            self.mpu = None