diff --git a/sources/application/TwigBase/Twig/Extension.php b/sources/application/TwigBase/Twig/Extension.php
index 21a69e79c..770225723 100644
--- a/sources/application/TwigBase/Twig/Extension.php
+++ b/sources/application/TwigBase/Twig/Extension.php
@@ -8,6 +8,7 @@ namespace Combodo\iTop\Application\TwigBase\Twig;
 
 
 use AttributeDateTime;
+use AttributeText;
 use Combodo\iTop\Application\UI\Base\iUIBlock;
 use Combodo\iTop\Renderer\BlockRenderer;
 use Dict;
@@ -98,6 +99,17 @@ class Extension
 			})
 		);
 
+		/**
+		 * Filter to transform the wiki syntax into HTML
+		 *
+		 * @uses \AttributeText::RenderWikiHtml()
+		 * @since 3.0.0
+		 */
+		$oTwigEnv->addFilter(new Twig_SimpleFilter('render_wiki_to_html', function ($sString) {
+				return AttributeText::RenderWikiHtml($sString);
+			})
+		);
+
 		// Filter to add a parameter at the end of the URL to force cache invalidation after an upgrade.
 		// Previously we put the iTop version but now it's the last setup/toolkit timestamp to avoid cache issues when building several times the same version during tests
 		//
diff --git a/templates/base/layouts/activity-panel/activity-entry/layout.html.twig b/templates/base/layouts/activity-panel/activity-entry/layout.html.twig
index 1c7cd1aa0..20b57f82a 100644
--- a/templates/base/layouts/activity-panel/activity-entry/layout.html.twig
+++ b/templates/base/layouts/activity-panel/activity-entry/layout.html.twig
@@ -28,7 +28,7 @@
 				<div class="ibo-activity-entry--main-information-content" data-role="ibo-activity-entry--main-information-content">
 					{% block iboActivityEntryMainInformationContent %}
 						{# Content is printed as raw because it is stored as HTML in the database and should have been sanitized before storage, so we can assume it is safe #}
-						{{ oUIBlock.GetContent()|raw }}
+						{{ oUIBlock.GetContent()|render_wiki_to_html|raw }}
 					{% endblock %}
 				</div>
 			</div>