README               | 4 ++--
 src/uploader/main.go | 6 +++---

diff --git a/README b/README
index 912997137379f897d1f7abfa415318840bc7979f..823492a49f8895b01a55c1ec6d3b0b1b2b8fad4b 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
 Simplest form file uploader.
 It just saves uploaded file from HTML form to the new file on the disk.
-Also it calculates BLAKE2s checksum, replying with it in the answer.
+Also it calculates BLAKE2b checksum, replying with it in the answer.
 
 You can upload files with curl:
 
@@ -8,4 +8,4 @@     curl -F fileupload=@somedata.tar.gpg http://localhost:8086/upload/
 
 You can verify integrity locally:
 
-    b2sum -a blake2s somedata.tar.gpg
+    b2sum -a blake2b somedata.tar.gpg
diff --git a/src/uploader/main.go b/src/uploader/main.go
index c3f4e23f44044b5f9d4792a12837389eda19511b..e2154cdc57df52e83648cc9a4fb5cbca0dabe083 100644
--- a/src/uploader/main.go
+++ b/src/uploader/main.go
@@ -18,7 +18,7 @@ 	"net/http"
 	"os"
 	"time"
 
-	"golang.org/x/crypto/blake2s"
+	"golang.org/x/crypto/blake2b"
 	"golang.org/x/net/netutil"
 )
 
@@ -57,7 +57,7 @@ 	if p.FormName() != FileFieldName {
 		log.Println(r.RemoteAddr, "non file form field")
 		return
 	}
-	h, err := blake2s.New256(nil)
+	h, err := blake2b.New256(nil)
 	if err != nil {
 		panic(err)
 	}
@@ -86,7 +86,7 @@ 	if err = os.Rename(fn+".part", fn); err != nil {
 		log.Println(r.RemoteAddr, fn, p.FileName(), n, sum, err)
 		return
 	}
-	fmt.Fprintf(w, "bytes: %d\nBLAKE2s: %s\n", n, sum)
+	fmt.Fprintf(w, "Timestamp: %s\nBytes: %d\nBLAKE2b: %s\n", fn, n, sum)
 	log.Println(r.RemoteAddr, fn, p.FileName(), n, sum)
 }