diff --git a/sources/Application/WebPage/AjaxPage.php b/sources/Application/WebPage/AjaxPage.php
index 3089c8d2c..18e295dc2 100644
--- a/sources/Application/WebPage/AjaxPage.php
+++ b/sources/Application/WebPage/AjaxPage.php
@@ -210,8 +210,6 @@ class AjaxPage extends WebPage implements iTabbedPage
 			}
 
 			ConsoleBlockRenderer::AddCssJsToPage($this, $this->oContentLayout);
-
-			$this->outputCollapsibleSectionInit();
 		}
 
 		// Render the blocks
diff --git a/sources/Application/WebPage/iTopWebPage.php b/sources/Application/WebPage/iTopWebPage.php
index 9b09e9ca7..530d03d56 100644
--- a/sources/Application/WebPage/iTopWebPage.php
+++ b/sources/Application/WebPage/iTopWebPage.php
@@ -912,9 +912,6 @@ HTML;
 		// TODO 3.0.0 not displayed ?
 		$this->GetContentLayout()->SetExtraHtmlContent(utils::FilterXSS($this->s_content));
 
-		// TODO 3.0.0 : to be removed
-		$this->outputCollapsibleSectionInit();
-
 		// Base structure of data to pass to the TWIG template
 		$aData['aPage'] = [
 			'sAbsoluteUrlAppRoot' => $sAbsoluteUrlAppRoot,