diff --git a/src/main/java/org/olat/core/gui/components/tabbedpane/TabbedPaneRenderer.java b/src/main/java/org/olat/core/gui/components/tabbedpane/TabbedPaneRenderer.java
index 1dbf244f3ec03d00af3834732623316017a2095c..a665420d6008f94b56845d4afa1183284bc37652 100644
--- a/src/main/java/org/olat/core/gui/components/tabbedpane/TabbedPaneRenderer.java
+++ b/src/main/java/org/olat/core/gui/components/tabbedpane/TabbedPaneRenderer.java
@@ -79,7 +79,7 @@ public class TabbedPaneRenderer implements ComponentRenderer {
 										
 				} else {
 					// disabled panels can not be clicked, but for layout reason needs still a a href
-					sb.append("><a href='javascript:;' title='").append(StringEscapeUtils.escapeHtml(translator.translate("disabled"))).append("'>").append(tabName).append("</a></li>");
+					sb.append(" class='disabled'><a href='javascript:;' title='").append(StringEscapeUtils.escapeHtml(translator.translate("disabled"))).append("'>").append(tabName).append("</a></li>");
 				}
 			}
 			else {