diff --git a/docs/dev-config-schema.html b/docs/dev-config-schema.html
index 07aecd35..944c5a58 100644
--- a/docs/dev-config-schema.html
+++ b/docs/dev-config-schema.html
@@ -228,7 +228,7 @@ Test.Example</pre>
         </tr>
         <tr>
           <td>mixed</td>
-          <td>new stdclass</td>
+          <td>new stdClass</td>
           <td>Any PHP variable is fine</td>
         </tr>
       </tbody>
diff --git a/library/HTMLPurifier/Config.php b/library/HTMLPurifier/Config.php
index 69e6d276..ddf3f844 100644
--- a/library/HTMLPurifier/Config.php
+++ b/library/HTMLPurifier/Config.php
@@ -333,7 +333,7 @@ class HTMLPurifier_Config
         }
 
         // Raw type might be negative when using the fully optimized form
-        // of stdclass, which indicates allow_null == true
+        // of stdClass, which indicates allow_null == true
         $rtype = is_int($def) ? $def : $def->type;
         if ($rtype < 0) {
             $type = -$rtype;
diff --git a/library/HTMLPurifier/ConfigSchema.php b/library/HTMLPurifier/ConfigSchema.php
index bfbb0f92..655c0e97 100644
--- a/library/HTMLPurifier/ConfigSchema.php
+++ b/library/HTMLPurifier/ConfigSchema.php
@@ -24,11 +24,11 @@ class HTMLPurifier_ConfigSchema
      *
      *  array(
      *      'Namespace' => array(
-     *          'Directive' => new stdclass(),
+     *          'Directive' => new stdClass(),
      *      )
      *  )
      *
-     * The stdclass may have the following properties:
+     * The stdClass may have the following properties:
      *
      *  - If isAlias isn't set:
      *      - type: Integer type of directive, see HTMLPurifier_VarParser for definitions
@@ -39,8 +39,8 @@ class HTMLPurifier_ConfigSchema
      *      - namespace: Namespace this directive aliases to
      *      - name: Directive name this directive aliases to
      *
-     * In certain degenerate cases, stdclass will actually be an integer. In
-     * that case, the value is equivalent to an stdclass with the type
+     * In certain degenerate cases, stdClass will actually be an integer. In
+     * that case, the value is equivalent to an stdClass with the type
      * property set to the integer. If the integer is negative, type is
      * equal to the absolute value of integer, and allow_null is true.
      *
@@ -105,7 +105,7 @@ class HTMLPurifier_ConfigSchema
      */
     public function add($key, $default, $type, $allow_null)
     {
-        $obj = new stdclass();
+        $obj = new stdClass();
         $obj->type = is_int($type) ? $type : HTMLPurifier_VarParser::$types[$type];
         if ($allow_null) {
             $obj->allow_null = true;
@@ -152,14 +152,14 @@ class HTMLPurifier_ConfigSchema
      */
     public function addAlias($key, $new_key)
     {
-        $obj = new stdclass;
+        $obj = new stdClass;
         $obj->key = $new_key;
         $obj->isAlias = true;
         $this->info[$key] = $obj;
     }
 
     /**
-     * Replaces any stdclass that only has the type property with type integer.
+     * Replaces any stdClass that only has the type property with type integer.
      */
     public function postProcess()
     {
diff --git a/library/HTMLPurifier/Generator.php b/library/HTMLPurifier/Generator.php
index 6fb56871..eb56e2df 100644
--- a/library/HTMLPurifier/Generator.php
+++ b/library/HTMLPurifier/Generator.php
@@ -146,7 +146,7 @@ class HTMLPurifier_Generator
             $attr = $this->generateAttributes($token->attr, $token->name);
             if ($this->_flashCompat) {
                 if ($token->name == "object") {
-                    $flash = new stdclass();
+                    $flash = new stdClass();
                     $flash->attr = $token->attr;
                     $flash->param = array();
                     $this->_flashStack[] = $flash;
diff --git a/smoketests/test-schema/Type.mixed.txt b/smoketests/test-schema/Type.mixed.txt
index 8bc14bbe..09357df5 100644
--- a/smoketests/test-schema/Type.mixed.txt
+++ b/smoketests/test-schema/Type.mixed.txt
@@ -1,5 +1,5 @@
 Type.mixed
 TYPE: mixed
-DEFAULT: new stdclass()
+DEFAULT: new stdClass()
 DESCRIPTION: The mixed type allows any type, and is not form-editable.
 --# vim: et sw=4 sts=4