diff --git a/src/Plugin/Field/FieldFormatter/RawValueFormatter.php b/src/Plugin/Field/FieldFormatter/RawValueFormatter.php
index 797da1c..3bc99a2 100644
--- a/src/Plugin/Field/FieldFormatter/RawValueFormatter.php
+++ b/src/Plugin/Field/FieldFormatter/RawValueFormatter.php
@@ -31,9 +31,10 @@ class RawValueFormatter extends FormatterBase {
     $elements = array();
     foreach ($items as $delta => $item) {
       $value = $item->getValue();
+      $val = json_encode(unserialize($value['value']));
       $elements[$delta] = array(
         '#theme' => 'raw_formatter',
-        '#raw_value' => $value['value'],
+        '#raw_value' => $val,
       );
     }
     return $elements;