diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 120c7cb11b02..015b7b37edee 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1784,7 +1784,7 @@ smb2_copychunk_range(const unsigned int xid,
 		pcchunk->SourceOffset = cpu_to_le64(src_off);
 		pcchunk->TargetOffset = cpu_to_le64(dest_off);
 		pcchunk->Length =
-			cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
+			cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk));
 
 		/* Request server copy to target from src identified by key */
 		kfree(retbuf);