diff --git a/currency/vendor/symfony/yaml/Unescaper.php b/currency/vendor/symfony/yaml/Unescaper.php
index 93206f9..71eeb42 100644
--- a/currency/vendor/symfony/yaml/Unescaper.php
+++ b/currency/vendor/symfony/yaml/Unescaper.php
@@ -72,7 +72,7 @@ class Unescaper
      */
     public function unescapeCharacter($value)
     {
-        switch ($value{1}) {
+        switch ($value[1]) {
             case '0':
                 return "\x0";
             case 'a':