diff --git a/classes/pref/feeds.php b/classes/pref/feeds.php
index 78e0f2f2b..002d56aeb 100755
--- a/classes/pref/feeds.php
+++ b/classes/pref/feeds.php
@@ -1489,7 +1489,7 @@ class Pref_Feeds extends Handler_Protected {
 
 			print "<button onclick='window.navigator.registerContentHandler(" .
                       "\"application/vnd.mozilla.maybe.feed\", " .
-                      "\"" . add_feed_url() . "\", " . " \"Tiny Tiny RSS\")'>" .
+                      "\"" . $this->subscribe_to_feed_url() . "\", " . " \"Tiny Tiny RSS\")'>" .
 							 __('Click here to register this site as a feed reader.') .
 				"</button>";
 
@@ -1972,4 +1972,11 @@ class Pref_Feeds extends Handler_Protected {
 
 		print (int) $this->dbh->fetch_result($result, 0, "num_inactive");
 	}
+
+	static function subscribe_to_feed_url() {
+		$url_path = get_self_url_prefix() .
+			"/public.php?op=subscribe&feed_url=%s";
+		return $url_path;
+	}
+
 }
\ No newline at end of file
diff --git a/include/functions.php b/include/functions.php
index 4801876c1..3ea1035cb 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -1791,19 +1791,6 @@
 		}
 	}
 
-	/**
-	 * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
-	 *
-	 * @return string The Mozilla Firefox feed adding URL.
-	 */
-	function add_feed_url() {
-		//$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
-
-		$url_path = get_self_url_prefix() .
-			"/public.php?op=subscribe&feed_url=%s";
-		return $url_path;
-	} // function add_feed_url
-
 	function encrypt_password($pass, $salt = '', $mode2 = false) {
 		if ($salt && $mode2) {
 			return "MODE2:" . hash('sha256', $salt . $pass);
diff --git a/plugins/bookmarklets/init.php b/plugins/bookmarklets/init.php
index 1ec4bbe9d..14db3994a 100644
--- a/plugins/bookmarklets/init.php
+++ b/plugins/bookmarklets/init.php
@@ -21,7 +21,7 @@ class Bookmarklets extends Plugin {
 
 		print "<p>" . __("Drag the link below to your browser toolbar, open the feed you're interested in in your browser and click on the link to subscribe to it.") . "</p>";
 
-		$bm_subscribe_url = str_replace('%s', '', add_feed_url());
+		$bm_subscribe_url = str_replace('%s', '', Pref_Feeds::subscribe_to_feed_url());
 
 		$confirm_str = str_replace("'", "\'", __('Subscribe to %s in Tiny Tiny RSS?'));