diff --git a/typo3/sysext/backend/Classes/Template/DocumentTemplate.php b/typo3/sysext/backend/Classes/Template/DocumentTemplate.php
index 2472d723f7c8ab671800cc5a0db569372459f713..62cf05987a321dd6d003acd158753b4b312642a3 100644
--- a/typo3/sysext/backend/Classes/Template/DocumentTemplate.php
+++ b/typo3/sysext/backend/Classes/Template/DocumentTemplate.php
@@ -1583,7 +1583,7 @@ function jumpToUrl(URL) {
 	 * @param int $tabBehaviour If set to '1' empty tabs will be remove, If set to '2' empty tabs will be disabled
 	 * @return string JavaScript section for the HTML header.
 	 */
-	public function getDynTabMenu($menuItems, $identString, $toggle = 0, $foldout = FALSE, $noWrap = TRUE, $fullWidth = FALSE, $defaultTabIndex = 1, $tabBehaviour = 2) {
+	public function getDynTabMenu($menuItems, $identString, $toggle = 0, $foldout = FALSE, $noWrap = TRUE, $fullWidth = FALSE, $defaultTabIndex = 1, $tabBehaviour = 1) {
 		// Load the static code, if not already done with the function below
 		$this->loadJavascriptLib('sysext/backend/Resources/Public/JavaScript/tabmenu.js');
 		$content = '';