diff --git a/main.go b/main.go
index b3ec7ff..6d4dc19 100644
--- a/main.go
+++ b/main.go
@@ -144,6 +144,8 @@ func send(c *cli.Context) error {
 	if err != nil {
 		return err
 	}
+	fname, _ = filepath.Abs(fname)
+	fname = filepath.Clean(fname)
 	_, filename := filepath.Split(fname)
 	fileOrFolder := "file"
 	fsize := finfo.Size()
@@ -155,7 +157,7 @@ func send(c *cli.Context) error {
 		}
 	}
 	fmt.Fprintf(os.Stderr,
-		"Sending %s %s name '%s'\nCode is: %s\nOn the other computer, please run:\n\ncroc %s\n\n",
+		"Sending %s %s named '%s'\nCode is: %s\nOn the other computer, please run:\n\ncroc %s\n\n",
 		humanize.Bytes(uint64(fsize)),
 		fileOrFolder,
 		filename,
diff --git a/src/relay/conn.go b/src/relay/conn.go
index a82ec98..94ea66f 100644
--- a/src/relay/conn.go
+++ b/src/relay/conn.go
@@ -19,12 +19,12 @@ const (
 	pingPeriod = (pongWait * 9) / 10
 
 	// Maximum message size allowed from peer.
-	maxMessageSize = 1024 * 1024
+	maxMessageSize = 1024 * 1024 * 16
 )
 
 var upgrader = websocket.Upgrader{
-	ReadBufferSize:  1024 * 1024,
-	WriteBufferSize: 1024 * 1024,
+	ReadBufferSize:  1024 * 1024 * 8,
+	WriteBufferSize: 1024 * 1024 * 8,
 }
 
 // connection is an middleman between the websocket connection and the hub.
diff --git a/src/sender/sender.go b/src/sender/sender.go
index 1e54eb2..14b64a6 100644
--- a/src/sender/sender.go
+++ b/src/sender/sender.go
@@ -156,7 +156,7 @@ func send(c *websocket.Conn, fname string, codephrase string) (err error) {
 
 			fmt.Fprintf(os.Stderr, "Sending...\n")
 			// send file, compure hash simultaneously
-			buffer := make([]byte, 1024*512)
+			buffer := make([]byte, 1024*1024*4)
 			bar := progressbar.NewOptions(
 				int(fstats.Size),
 				progressbar.OptionSetRenderBlankState(true),