diff --git a/src/DataCollector/CacheCollector.php b/src/DataCollector/CacheCollector.php
index 03847e6f..ef162592 100644
--- a/src/DataCollector/CacheCollector.php
+++ b/src/DataCollector/CacheCollector.php
@@ -51,6 +51,9 @@ public function onCacheEvent($event)
 
         if (isset($params['value'])) {
             if ($this->collectValues) {
+                if (is_string($params['value'])) {
+                    $params['value'] = @unserialize($params['value']) ?: $params['value'];
+                }
                 if ($this->isHtmlVarDumperUsed()) {
                     $params['value'] = $this->getVarDumper()->renderVar($params['value']);
                 } else {