diff --git a/theme-openbureau.css b/theme-openbureau.css
index d6b11ec..65322f5 100644
--- a/theme-openbureau.css
+++ b/theme-openbureau.css
@@ -782,7 +782,16 @@ a.muted:hover {
   font-size: 12px !important;
 }
 
-/* ─── Avatare etwas weicher ─────────────────────────────── */
-.ui.avatar.image, .ui.avatar img, img.avatar {
-  border-radius: var(--ob-radius-sm) !important;
+/* ─── Avatare: runde Kreise statt eckigem Block ─────────── */
+.ui.avatar,
+.ui.avatar.image,
+.ui.avatar img,
+img.avatar,
+a.avatar img,
+.comment .avatar img,
+.timeline-avatar img,
+.flex-item-leading .ui.avatar {
+  border-radius: 50% !important;
+  overflow: hidden !important;
+  background: transparent !important;
 }