diff --git a/ValidatorPanel.php b/ValidatorPanel.php
index 45e0807..2d1ae39 100644
--- a/ValidatorPanel.php
+++ b/ValidatorPanel.php
@@ -780,7 +780,7 @@ class ValidatorPanel extends Nette\Object implements Tracy\IBarPanel
 	/**
 	 * @var array
 	 */
-	public static $severenity = array(
+	public static $severity = array(
 		LIBXML_ERR_WARNING => 'Warning',
 		LIBXML_ERR_ERROR => 'Error',
 		LIBXML_ERR_FATAL => 'Fatal error',
diff --git a/composer.json b/composer.json
index da09357..f920cb5 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         "issues":"https://github.com/Kdyby/HtmlValidatorPanel/issues"
     },
     "require":{
-        "tracy/tracy":"~2.3"
+        "tracy/tracy":"~2.4"
     },
     "suggest":{
         "nette/di":"The extension can be registered using nette/di into your application"
diff --git a/panel.phtml b/panel.phtml
index 1d7ab3c..88e5f4f 100644
--- a/panel.phtml
+++ b/panel.phtml
@@ -18,17 +18,17 @@ use tracy;
 		box-shadow: none !important;
 	}
 
-    #tracy-debug .tracy-htmlValidation td span.severenity-1 {
+    #tracy-debug .tracy-htmlValidation td span.severity-1 {
         color: #aaaa30 !important;
         font-weight: bold !important;
     }
 
-    #tracy-debug .tracy-htmlValidation td span.severenity-2 {
+    #tracy-debug .tracy-htmlValidation td span.severity-2 {
         color: #aa832f !important;
 	    font-weight: bold !important;
     }
 
-    #tracy-debug .tracy-htmlValidation td span.severenity-3 {
+    #tracy-debug .tracy-htmlValidation td span.severity-3 {
         color: #aa4c34 !important;
 	    font-weight: bold !important;
     }
@@ -49,8 +49,8 @@ use tracy;
 <div class="tracy-inner tracy-htmlValidation">
     <table>
         <?php foreach ($errors as $error): ?>
-        <tr><td><span class="severenity-<?php echo (int)$error->level; ?>">
-            <?php echo htmlspecialchars(ValidatorPanel::$severenity[$error->level] . ' on column ' . $error->column . ': ' . $error->message); ?>
+        <tr><td><span class="severity-<?php echo (int)$error->level; ?>">
+            <?php echo htmlspecialchars(ValidatorPanel::$severity[$error->level] . ' on column ' . $error->column . ': ' . $error->message); ?>
         </span></td></tr>
         <tr><td>
             <?php echo \Tracy\BlueScreen::highlightPhp($html, $error->line, 10); ?>