diff --git a/html/inc/forum.inc b/html/inc/forum.inc
index a851c778ec..8f178b7dea 100644
--- a/html/inc/forum.inc
+++ b/html/inc/forum.inc
@@ -555,7 +555,7 @@ function show_post(
     } else {
         $highlight = $is_posted_by_special;
     }
-    $class = $highlight?' class="bg-info" ':'';
+    $class = $highlight?' class="bg-primary" ':'';
 
     echo "
         <tr>