diff --git a/theme/standard/styles_moz.css b/theme/standard/styles_moz.css
index d9e07981deb..3d63784413b 100644
--- a/theme/standard/styles_moz.css
+++ b/theme/standard/styles_moz.css
@@ -126,7 +126,11 @@ table.minicalendar td {
     -moz-border-radius-bottomright:20px;
 }
 
-.forumpostside, .userinfoboxside {
+.forumpost .left {
+    -moz-border-radius-bottomleft:20px;
+}
+
+#user-view .left {
     -moz-border-radius-bottomleft:20px;
 }