diff --git a/frontend/lib/style.css b/frontend/lib/style.css
index fc32078b..4670bf8a 100644
--- a/frontend/lib/style.css
+++ b/frontend/lib/style.css
@@ -322,6 +322,8 @@
   & .comment_user_avatar {
     margin-top: 4px;
 
+    user-select: none;
+
     & img,
     & svg {
       width: 100%;