diff --git a/resources/assets/stylesheets/highcontrast.scss b/resources/assets/stylesheets/highcontrast.scss
index 4e1e4efc24955dfc908785e47c1212bcec042494..277e383af3765dc75b7c8b18aebd51f51cf0b851 100644
--- a/resources/assets/stylesheets/highcontrast.scss
+++ b/resources/assets/stylesheets/highcontrast.scss
@@ -1309,3 +1309,18 @@ form.default {
         border: 1px solid var(--black);
     }
 }
+
+.studip-tree-course {
+    .course-dates {
+        color: var(--black) !important;
+
+    }
+}
+
+div.avatar-widget {
+    .profile-avatar {
+        .avatar-overlay {
+            background-color: fade-out($base-color, 0.1);
+        }
+    }
+}