diff --git a/e107_plugins/forum/forum.css b/e107_plugins/forum/forum.css
index 444f1ccd0..e26d82378 100644
--- a/e107_plugins/forum/forum.css
+++ b/e107_plugins/forum/forum.css
@@ -8,7 +8,7 @@
 #forum-viewtopic li.forum-viewtopic-post                { border-top:1px solid #EEE;  padding:15px 10px }
 #forum-viewtopic li.forum-viewtopic-post:nth-child(odd) { background: #F5F5F5 }
 #forum-viewtopic li ul.thumbnails                       { margin-top:15px }
-#forum-viewtopic li img.user-avatar                     { margin-bottom:10px; display:inline-block }
+#forum-viewtopic li img.user-avatar                     { margin-bottom:10px; display:inline-block; border-radius:50% }
 
 .forum-attachment-file                                  { margin-top:15px; }
 .forum-user-combo                                       { padding-bottom:5px }