diff --git a/sass/_variables.scss b/sass/_variables.scss
index 67f2fd301..eab308de9 100644
--- a/sass/_variables.scss
+++ b/sass/_variables.scss
@@ -191,7 +191,7 @@ $mobile_portrait_length: 480px !default;
 }
 
 #conversejs.theme-concord {
-    --avatar-border-radius: 100%;
+    --avatar-border-radius: 10%;
     --avatar-border: 0px;
     --avatar-background-color: none;