diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 1debdfeee90ff55b3667c67271218db7618eff98..ab2eb936975fd18f45e68ce1efb2d5033443fb15 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -513,7 +513,8 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
 	const bool use_append = btrfs_use_zone_append(inode, disk_start);
 	const unsigned int bio_op = use_append ? REQ_OP_ZONE_APPEND : REQ_OP_WRITE;
 
-	WARN_ON(!PAGE_ALIGNED(start));
+	ASSERT(IS_ALIGNED(start, fs_info->sectorsize) &&
+	       IS_ALIGNED(len, fs_info->sectorsize));
 	cb = kmalloc(compressed_bio_size(fs_info, compressed_len), GFP_NOFS);
 	if (!cb)
 		return BLK_STS_RESOURCE;