diff --git a/application/cmdbabstract.class.inc.php b/application/cmdbabstract.class.inc.php
index 852e4b97a..bfb142322 100644
--- a/application/cmdbabstract.class.inc.php
+++ b/application/cmdbabstract.class.inc.php
@@ -544,11 +544,11 @@ EOF
 				{
 					continue;
 				}
-				$oPage->AddAjaxTab($oAttDef->GetLabel(), 
+				$oPage->AddAjaxTab($oAttDef->GetLabel(),
 					utils::GetAbsoluteUrlAppRoot().'pages/ajax.render.php?operation=dashboard&class='.get_class($this).'&id='.$this->GetKey().'&attcode='.$oAttDef->GetCode(),
 					true,
 					'Class:'.$sClass.'/Attribute:'.$sAttCode,
-					AjaxTab::ENUM_TAB_PLACEHOLDER_REL_PATH_DASHBOARD);
+					AjaxTab::ENUM_TAB_PLACEHOLDER_DASHBOARD);
 				continue;
 			}
 
diff --git a/datamodels/2.x/itop-tickets/main.itop-tickets.php b/datamodels/2.x/itop-tickets/main.itop-tickets.php
index 97c516855..b17a80a9e 100755
--- a/datamodels/2.x/itop-tickets/main.itop-tickets.php
+++ b/datamodels/2.x/itop-tickets/main.itop-tickets.php
@@ -285,7 +285,9 @@ class _Ticket extends cmdbAbstractObject
 			$oPage->add_linked_stylesheet(utils::GetAbsoluteUrlAppRoot().'css/jquery.contextMenu.css');
 			$oPage->add_linked_script(utils::GetAbsoluteUrlAppRoot().'js/jquery.contextMenu.js');
 			$oPage->add_linked_script(utils::GetAbsoluteUrlAppRoot().'js/simple_graph.js');
-			$oPage->AddAjaxTab('Ticket:ImpactAnalysis', utils::GetAbsoluteUrlAppRoot().'pages/ajax.render.php?operation=ticket_impact&class='.get_class($this).'&id='.$this->GetKey(), true, null, AjaxTab::ENUM_TAB_PLACEHOLDER_REL_PATH_MISC);
+			$oPage->AddAjaxTab('Ticket:ImpactAnalysis',
+				utils::GetAbsoluteUrlAppRoot().'pages/ajax.render.php?operation=ticket_impact&class='.get_class($this).'&id='.$this->GetKey(),
+				true, null, AjaxTab::ENUM_TAB_PLACEHOLDER_MISC);
 		}
 	}
 }
diff --git a/pages/csvimport.php b/pages/csvimport.php
index 1d3ad427e..b8af93c9d 100644
--- a/pages/csvimport.php
+++ b/pages/csvimport.php
@@ -1440,7 +1440,8 @@ EOF
 		if (Utils::GetConfig()->Get('csv_import_history_display'))
 		{
 			$oPage->SetCurrentTabContainer('tabs1');
-			$oPage->AddAjaxTab('UI:History:BulkImports', utils::GetAbsoluteUrlAppRoot().'pages/csvimport.php?step=11', true /* bCache */, null, AjaxTab::ENUM_TAB_PLACEHOLDER_REL_PATH_MISC);
+			$oPage->AddAjaxTab('UI:History:BulkImports', utils::GetAbsoluteUrlAppRoot().'pages/csvimport.php?step=11', true /* bCache */,
+				null, AjaxTab::ENUM_TAB_PLACEHOLDER_MISC);
 		}
 	}
 			
diff --git a/sources/application/UI/Base/Layout/TabContainer/Tab/AjaxTab.php b/sources/application/UI/Base/Layout/TabContainer/Tab/AjaxTab.php
index 86b5a3fa9..4601fee02 100644
--- a/sources/application/UI/Base/Layout/TabContainer/Tab/AjaxTab.php
+++ b/sources/application/UI/Base/Layout/TabContainer/Tab/AjaxTab.php
@@ -33,20 +33,38 @@ use utils;
  * @internal
  * @since   3.0.0
  */
-class AjaxTab extends Tab {
+class AjaxTab extends Tab
+{
 
-	const ENUM_TAB_PLACEHOLDER_REL_PATH_LIST = 'images/placeholders/skeleton-list.svg';
-	const ENUM_TAB_PLACEHOLDER_REL_PATH_DASHBOARD = 'images/placeholders/skeleton-dashboard.svg';
-	const ENUM_TAB_PLACEHOLDER_REL_PATH_OBJECT = 'images/placeholders/skeleton-object.svg';
-	const ENUM_TAB_PLACEHOLDER_REL_PATH_MISC = 'images/placeholders/skeleton.svg';
+	/**
+	 * @see static::$sPlaceholderRelPath
+	 * @var string
+	 */
+	public const ENUM_TAB_PLACEHOLDER_LIST = 'images/placeholders/skeleton-list.svg';
+	/**
+	 * @see static::$sPlaceholderRelPath
+	 * @var string
+	 */
+	public const ENUM_TAB_PLACEHOLDER_DASHBOARD = 'images/placeholders/skeleton-dashboard.svg';
+	/**
+	 * @see static::$sPlaceholderRelPath
+	 * @var string
+	 */
+	public const ENUM_TAB_PLACEHOLDER_OBJECT = 'images/placeholders/skeleton-object.svg';
+	/**
+	 * @see static::$sPlaceholderRelPath
+	 * @var string
+	 */
+	public const ENUM_TAB_PLACEHOLDER_MISC = 'images/placeholders/skeleton.svg';
+
+	/** @var string */
+	public const DEFAULT_TAB_PLACEHOLDER = self::ENUM_TAB_PLACEHOLDER_MISC;
 
-	const DEFAULT_TAB_PLACEHOLDER_REL_PATH = self::ENUM_TAB_PLACEHOLDER_REL_PATH_MISC;
-	
 	// Overloaded constants
 	public const BLOCK_CODE = 'ibo-ajax-tab';
 	public const TAB_TYPE = TabManager::ENUM_TAB_TYPE_AJAX;
 
-	/** @var string Placeholder displayed before tab is loaded */
+	/** @var string Placeholder displayed before tab is loaded (relative path from the app. root) */
 	private $sPlaceholderRelPath;
 	/** @var string The target URL to be loaded asynchronously */
 	private $sUrl;
@@ -60,11 +78,12 @@ class AjaxTab extends Tab {
 	 * @param string $sTitle
 	 * @param string $sPlaceholderRelPath
 	 */
-	public function __construct(string $sTabCode, string $sTitle, string $sPlaceholderRelPath = AjaxTab::DEFAULT_TAB_PLACEHOLDER_REL_PATH)
+	public function __construct(string $sTabCode, string $sTitle, string $sPlaceholderRelPath = AjaxTab::DEFAULT_TAB_PLACEHOLDER)
 	{
 		parent::__construct($sTabCode, $sTitle);
 		$this->sPlaceholderRelPath = $sPlaceholderRelPath;
 	}
+
 	/**
 	 * @param string $sUrl
 	 *
diff --git a/sources/application/UI/Base/Layout/TabContainer/TabContainer.php b/sources/application/UI/Base/Layout/TabContainer/TabContainer.php
index cabad41c2..7213660b3 100644
--- a/sources/application/UI/Base/Layout/TabContainer/TabContainer.php
+++ b/sources/application/UI/Base/Layout/TabContainer/TabContainer.php
@@ -121,7 +121,7 @@ class TabContainer extends UIContentBlock
 	public function AddAjaxTab(string $sTabCode, string $sTitle, ?string $sPlaceholder = null): Tab
 	{
 		if($sPlaceholder === null){
-			$sPlaceholder = AjaxTab::DEFAULT_TAB_PLACEHOLDER_REL_PATH;
+			$sPlaceholder = AjaxTab::DEFAULT_TAB_PLACEHOLDER;
 		}
 		$oTab = new AjaxTab($sTabCode, $sTitle, $sPlaceholder);
 		$this->AddSubBlock($oTab);