diff --git a/controllers/item.php b/controllers/item.php
index f20c564..0a17e93 100644
--- a/controllers/item.php
+++ b/controllers/item.php
@@ -65,13 +65,13 @@ Router\get_action('show', function() {
             break;
     }
 
-    $image_proxy = Model\Config\get('image_proxy');
+    $image_proxy = (bool) Model\Config\get('image_proxy');
 
     // add the image proxy if requested and required
-    $item['content'] = Model\Proxy\addProxyToTags($item['content'], $item['url'], $image_proxy, $feed['cloak_referrer']);
+    $item['content'] = Model\Proxy\rewrite_html($item['content'], $item['url'], $image_proxy, $feed['cloak_referrer']);
 
     if ($image_proxy && strpos($item['enclosure_type'], 'image') === 0) {
-        $item['enclosure'] = Model\Proxy\addProxyToLink($item['enclosure']);
+        $item['enclosure'] = Model\Proxy\rewrite_link($item['enclosure']);
     }
 
     Response\html(Template\layout('show_item', array(
@@ -120,7 +120,7 @@ Router\post_action('download-item', function() {
     $feed = Model\Feed\get($item['feed_id']);
 
     $download = Model\Item\download_content_id($id);
-    $download['content'] = Model\Proxy\addProxyToTags($download['content'], $item['url'], Model\Config\get('image_proxy'), $feed['cloak_referrer']);
+    $download['content'] = Model\Proxy\rewrite_html($download['content'], $item['url'], Model\Config\get('image_proxy'), $feed['cloak_referrer']);
 
     Response\json($download);
 });
diff --git a/models/proxy.php b/models/proxy.php
index 313ff9e..2e0cca3 100644
--- a/models/proxy.php
+++ b/models/proxy.php
@@ -9,7 +9,7 @@ use PicoFeed\Filter\Filter;
 use PicoFeed\Client\Client;
 use PicoFeed\Logging\Logger;
 
-function addProxyToLink($link)
+function rewrite_link($link)
 {
     if (Helper\is_secure_connection() && strpos($link, 'http:') === 0) {
         $link = '?action=proxy&url='.rawurlencode($link);
@@ -18,7 +18,7 @@ function addProxyToLink($link)
     return $link;
 }
 
-function addProxyToTags($html, $website, $proxy_images, $cloak_referrer)
+function rewrite_html($html, $website, $proxy_images, $cloak_referrer)
 {
     if ($html === '' // no content, no proxy
         || (! $cloak_referrer && ! $proxy_images) // neither cloaking nor proxing enabled