diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index c593eb2b193a..c8c66b167cd7 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -1322,8 +1322,5 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
 	if (ret)
 		return ret;
 
-	/* All of the specified blocks must be exchanged in succeed */
-	BUG_ON(*moved_len != len);
-
 	return 0;
 }