From f5b9872f8e955d4ecf9ee2532b6402f5b18e4fcb Mon Sep 17 00:00:00 2001
From: David Meier <david.meier@mediawerk.ch>
Date: Tue, 19 Jun 2018 12:02:16 +0200
Subject: [PATCH] header need $key and $value

---
 src/Formatter/Formatter.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Formatter/Formatter.php b/src/Formatter/Formatter.php
index a379fb1..14c0167 100644
--- a/src/Formatter/Formatter.php
+++ b/src/Formatter/Formatter.php
@@ -36,8 +36,8 @@ public function addVCard(VCard $vCard): self
 
     public function download(): void
     {
-        foreach ($this->getHeaders() as $header) {
-            header($header);
+        foreach ($this->getHeaders() as $key => $value) {
+            header(sprintf("%s: %s", $key, $value));
         }
 
         echo $this->getContent();