diff --git a/application/utils.inc.php b/application/utils.inc.php
index f002ec383..266533de0 100644
--- a/application/utils.inc.php
+++ b/application/utils.inc.php
@@ -97,6 +97,11 @@ class utils
 	 * @since 3.0.0
 	 */
 	public const ENUM_SANITIZATION_FILTER_RAW_DATA = 'raw_data';
+	/**
+	 * @var string
+	 * @since 3.0.2, 3.1.0 N°4899
+	 */
+	public const ENUM_SANITIZATION_FILTER_URL = 'url';
 
 	/**
 	 * @var string
@@ -455,7 +460,7 @@ class utils
 				break;
 
 			// For URL
-			case 'url':
+			case static::ENUM_SANITIZATION_FILTER_URL:
 				$retValue = filter_var($value, FILTER_SANITIZE_URL);
 				break;
 
diff --git a/core/ormStyle.class.inc.php b/core/ormStyle.class.inc.php
index e7c62a0ea..8f3b02abf 100644
--- a/core/ormStyle.class.inc.php
+++ b/core/ormStyle.class.inc.php
@@ -50,7 +50,7 @@ class ormStyle
 	 */
 	public function HasMainColor(): bool
 	{
-		return strlen($this->sMainColor) > 0;
+		return utils::StrLen($this->sMainColor) > 0;
 	}
 
 	/**
@@ -68,7 +68,7 @@ class ormStyle
 	 */
 	public function SetMainColor(?string $sMainColor)
 	{
-		$this->sMainColor = (strlen($sMainColor) === 0) ? null : $sMainColor;
+		$this->sMainColor = (utils::StrLen($sMainColor) === 0) ? null : $sMainColor;
 		return $this;
 	}
 
@@ -78,7 +78,7 @@ class ormStyle
 	 */
 	public function HasComplementaryColor(): bool
 	{
-		return strlen($this->sComplementaryColor) > 0;
+		return utils::StrLen($this->sComplementaryColor) > 0;
 	}
 
 	/**
@@ -96,7 +96,7 @@ class ormStyle
 	 */
 	public function SetComplementaryColor(?string $sComplementaryColor)
 	{
-		$this->sComplementaryColor = (strlen($sComplementaryColor) === 0) ? null : $sComplementaryColor;
+		$this->sComplementaryColor = (utils::StrLen($sComplementaryColor) === 0) ? null : $sComplementaryColor;
 		return $this;
 	}
 
@@ -116,7 +116,7 @@ class ormStyle
 	 */
 	public function HasStyleClass(): bool
 	{
-		return strlen($this->sStyleClass) > 0;
+		return utils::StrLen($this->sStyleClass) > 0;
 	}
 
 	/**
@@ -134,7 +134,7 @@ class ormStyle
 	 */
 	public function SetStyleClass(?string $sStyleClass)
 	{
-		$this->sStyleClass = (strlen($sStyleClass) === 0) ? null : $sStyleClass;
+		$this->sStyleClass = (utils::StrLen($sStyleClass) === 0) ? null : $sStyleClass;
 		return $this;
 	}
 
@@ -144,7 +144,7 @@ class ormStyle
 	 */
 	public function HasAltStyleClass(): bool
 	{
-		return strlen($this->sAltStyleClass) > 0;
+		return utils::StrLen($this->sAltStyleClass) > 0;
 	}
 
 	/**
@@ -162,7 +162,7 @@ class ormStyle
 	 */
 	public function SetAltStyleClass(?string $sAltStyleClass)
 	{
-		$this->sAltStyleClass = (strlen($sAltStyleClass) === 0) ? null : $sAltStyleClass;
+		$this->sAltStyleClass = (utils::StrLen($sAltStyleClass) === 0) ? null : $sAltStyleClass;
 		return $this;
 	}
 
@@ -172,7 +172,7 @@ class ormStyle
 	 */
 	public function HasDecorationClasses(): bool
 	{
-		return strlen($this->sDecorationClasses) > 0;
+		return utils::StrLen($this->sDecorationClasses) > 0;
 	}
 
 	/**
@@ -190,7 +190,7 @@ class ormStyle
 	 */
 	public function SetDecorationClasses(?string $sDecorationClasses)
 	{
-		$this->sDecorationClasses = (strlen($sDecorationClasses) === 0) ? null : $sDecorationClasses;
+		$this->sDecorationClasses = (utils::StrLen($sDecorationClasses) === 0) ? null : $sDecorationClasses;
 		return $this;
 	}
 
@@ -200,7 +200,7 @@ class ormStyle
 	 */
 	public function HasIcon(): bool
 	{
-		return strlen($this->sIcon) > 0;
+		return utils::StrLen($this->sIcon) > 0;
 	}
 
 	/**
@@ -210,7 +210,7 @@ class ormStyle
 	 */
 	public function SetIcon(?string $sIcon)
 	{
-		$this->sIcon = (strlen($sIcon) === 0) ? null : $sIcon;
+		$this->sIcon = (utils::StrLen($sIcon) === 0) ? null : $sIcon;
 		return $this;
 	}
 
diff --git a/pages/ajax.render.php b/pages/ajax.render.php
index baebf3b0d..e9ea8eda8 100644
--- a/pages/ajax.render.php
+++ b/pages/ajax.render.php
@@ -932,7 +932,7 @@ try
 
 			$aExtraParams = utils::ReadParam('extra_params', array(), false, 'raw_data');
 			$sDashboardFile = utils::ReadParam('file', '', false, 'raw_data');
-			$sReloadURL = utils::ReadParam('reload_url', '', false, 'url');
+			$sReloadURL = utils::ReadParam('reload_url', '', false, utils::ENUM_SANITIZATION_FILTER_URL);
 			$oDashboard = RuntimeDashboard::GetDashboard($sDashboardFile, $sDashboardId);
 			$aResult = array('error' => '');
 			if (!is_null($oDashboard))
@@ -950,7 +950,7 @@ try
 			$sDashboardId = utils::ReadParam('dashboard_id', '', false, 'raw_data');
 			$aExtraParams = utils::ReadParam('extra_params', array(), false, 'raw_data');
 			$sDashboardFile = utils::ReadParam('file', '', false, 'raw_data');
-			$sReloadURL = utils::ReadParam('reload_url', '', false, 'url');
+			$sReloadURL = utils::ReadParam('reload_url', '', false, utils::ENUM_SANITIZATION_FILTER_URL);
 			$oDashboard = RuntimeDashboard::GetDashboard($sDashboardFile, $sDashboardId);
 			$aResult = array('error' => '');
 			if (!is_null($oDashboard))
@@ -967,7 +967,7 @@ try
 			$sDashboardId = utils::ReadParam('dashboard_id', '', false, 'context_param');
 
 			$aExtraParams = utils::ReadParam('extra_params', array(), false, 'raw_data');
-			$sReloadURL = utils::ReadParam('reload_url', '', false, 'url');
+			$sReloadURL = utils::ReadParam('reload_url', '', false, utils::ENUM_SANITIZATION_FILTER_URL);
 			appUserPreferences::SetPref('display_original_dashboard_'.$sDashboardId, false);
 			$sJSExtraParams = json_encode($aExtraParams);
 			$aParams = array();
@@ -1009,7 +1009,7 @@ JS
 
 		case 'revert_dashboard':
 			$sDashboardId = utils::ReadParam('dashboard_id', '', false, 'raw_data');
-			$sReloadURL = utils::ReadParam('reload_url', '', false, 'url');
+			$sReloadURL = utils::ReadParam('reload_url', '', false, utils::ENUM_SANITIZATION_FILTER_URL);
 			appUserPreferences::UnsetPref('display_original_dashboard_'.$sDashboardId);
 			$oDashboard = new RuntimeDashboard($sDashboardId);
 			$oDashboard->Revert();
@@ -1039,7 +1039,7 @@ EOF
 			$aParams['cells'] = utils::ReadParam('cells', array(), false, 'raw_data');
 			$aParams['auto_reload'] = utils::ReadParam('auto_reload', false);
 			$aParams['auto_reload_sec'] = utils::ReadParam('auto_reload_sec', 300);
-			$sReloadURL = utils::ReadParam('reload_url', '', false, 'url');
+			$sReloadURL = utils::ReadParam('reload_url', '', false, utils::ENUM_SANITIZATION_FILTER_URL);
 			$oDashboard = new RuntimeDashboard($sDashboardId);
 			$oDashboard->FromParams($aParams);
 			$oDashboard->SetReloadURL($sReloadURL);
@@ -1051,7 +1051,7 @@ EOF
 			$aExtraParams = utils::ReadParam('extra_params', array(), false, 'raw_data');
 			$aExtraParams['dashboard_div_id'] = utils::Sanitize($sId, '', 'element_identifier');
 			$sDashboardFile = utils::ReadParam('file', '', false, 'string');
-			$sReloadURL = utils::ReadParam('reload_url', '', false, 'url');
+			$sReloadURL = utils::ReadParam('reload_url', '', false, utils::ENUM_SANITIZATION_FILTER_URL);
 			$oDashboard = RuntimeDashboard::GetDashboardToEdit($sDashboardFile, $sId);
 			if (!is_null($oDashboard)) {
 				if (!empty($sReloadURL)) {
diff --git a/sources/Application/UI/Base/Component/Input/InputWithLabel.php b/sources/Application/UI/Base/Component/Input/InputWithLabel.php
index 325d15275..b7ce8f4d9 100644
--- a/sources/Application/UI/Base/Component/Input/InputWithLabel.php
+++ b/sources/Application/UI/Base/Component/Input/InputWithLabel.php
@@ -9,6 +9,7 @@ namespace Combodo\iTop\Application\UI\Base\Component\Input;
 
 
 use Combodo\iTop\Application\UI\Base\UIBlock;
+use utils;
 
 /**
  * You might want to use a {@link \Combodo\iTop\Application\UI\Base\Component\Field\Field} component instead...
@@ -134,7 +135,7 @@ class InputWithLabel extends UIBlock
 	 */
 	public function HasDescription(): bool
 	{
-		return strlen($this->sDescription) > 0;
+		return utils::StrLen($this->sDescription) > 0;
 	}
 
 }
\ No newline at end of file