diff --git a/client.go b/client.go
index 58d0da1..6275920 100644
--- a/client.go
+++ b/client.go
@@ -4,6 +4,7 @@ import (
 	"encoding/xml"
 	"errors"
 	"fmt"
+	"io"
 	"net"
 	"time"
 
@@ -211,7 +212,7 @@ func (c *Client) Send(packet stanza.Packet) error {
 		return errors.New("cannot marshal packet " + err.Error())
 	}
 
-	return c.sendWithLogger(string(data))
+	return c.sendWithWriter(c.Session.streamLogger, data)
 }
 
 // SendRaw sends an XMPP stanza as a string to the server.
@@ -224,12 +225,12 @@ func (c *Client) SendRaw(packet string) error {
 		return errors.New("client is not connected")
 	}
 
-	return c.sendWithLogger(packet)
+	return c.sendWithWriter(c.Session.streamLogger, []byte(packet))
 }
 
-func (c *Client) sendWithLogger(packet string) error {
+func (c *Client) sendWithWriter(writer io.Writer, packet []byte) error {
 	var err error
-	_, err = fmt.Fprintf(c.Session.streamLogger, packet)
+	_, err = writer.Write(packet)
 	return err
 }
 
diff --git a/client_internal_test.go b/client_internal_test.go
new file mode 100644
index 0000000..6daef09
--- /dev/null
+++ b/client_internal_test.go
@@ -0,0 +1,19 @@
+package xmpp
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestClient_Send(t *testing.T) {
+	buffer := bytes.NewBufferString("")
+	client := Client{}
+	data := []byte("https://da.wikipedia.org/wiki/J%C3%A6vnd%C3%B8gn")
+	if err := client.sendWithWriter(buffer, data); err != nil {
+		t.Errorf("Writing failed: %v", err)
+	}
+
+	if buffer.String() != string(data) {
+		t.Errorf("Incorrect value sent to buffer: '%s'", buffer.String())
+	}
+}