diff --git a/Classes/Hooks/T3libTcemainHook.php b/Classes/Hooks/T3libTcemainHook.php
index edc5b6f..4a0a784 100644
--- a/Classes/Hooks/T3libTcemainHook.php
+++ b/Classes/Hooks/T3libTcemainHook.php
@@ -20,8 +20,6 @@ function clearCachePostProc($params, &$pObj) {
 			return;
 		}
 		switch($params['cacheCmd']) {
-			case 'pages':
-			case 'all':
 			case 'dyncss':
 				GeneralUtility::rmdir(
 					PATH_site . 'typo3temp/Cache/Data/DynCss',
diff --git a/Classes/XClass/RteHtmlAreaBase.php b/Classes/XClass/RteHtmlAreaBase.php
new file mode 100644
index 0000000..9f32cc4
--- /dev/null
+++ b/Classes/XClass/RteHtmlAreaBase.php
@@ -0,0 +1,19 @@
+<?php
+
+
+namespace KayStrobach\Dyncss\XClass;
+
+
+class RteHtmlAreaBase extends \TYPO3\CMS\Rtehtmlarea\RteHtmlAreaBase {
+	/**
+	 * @return string
+	 */
+	public function getContentCssFileName() {
+
+		$this->thisConfig['contentCSS'] = parent::getContentCssFileName();
+
+		$this->thisConfig['contentCSS'] = substr(\KayStrobach\Dyncss\Service\DyncssService::getCompiledFile($this->thisConfig['contentCSS']), 3);
+
+		return parent::getContentCssFileName();
+	}
+}
\ No newline at end of file
diff --git a/ext_conf_template.txt b/ext_conf_template.txt
index c1f41bf..192f723 100644
--- a/ext_conf_template.txt
+++ b/ext_conf_template.txt
@@ -2,4 +2,7 @@
 state =
 
 # cat=basic; type=boolean; label= Enable Debugmode (e.g. for firesass or similar), if the used parser is able to do that
-enableDebugMode =
\ No newline at end of file
+enableDebugMode =
+
+# cat=basic; type=boolean; label= Enable xclass for parsing RTE.default.contentCSS
+enableRteXclass = 1
\ No newline at end of file
diff --git a/ext_localconf.php b/ext_localconf.php
index 057f247..edaa64c 100644
--- a/ext_localconf.php
+++ b/ext_localconf.php
@@ -40,3 +40,11 @@
 // clear cache item
 	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['clearCachePostProc'][] = 'KayStrobach\Dyncss\Hooks\T3libTcemainHook->clearCachePostProc';
 	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['additionalBackendItems']['cacheActions'][] = 'KayStrobach\Dyncss\Hooks\Backend\Toolbar\ClearCacheActionsHook';
+
+// pagets rte xclass parsing RTE.default.contentCSS
+	$dynCssConfig = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['dyncss']);
+	if($dynCssConfig['enableRteXclass']) {
+		$GLOBALS['TYPO3_CONF_VARS']['SYS']['Objects']['TYPO3\CMS\Rtehtmlarea\RteHtmlAreaBase'] = array(
+			'className' => 'KayStrobach\Dyncss\XClass\RteHtmlAreaBase',
+		);
+	}