diff --git a/core/templates/core/base.html b/core/templates/core/base.html
index 872552f..12e85e0 100644
--- a/core/templates/core/base.html
+++ b/core/templates/core/base.html
@@ -66,7 +66,7 @@
                     <div class="container-fluid">
                         {% if messages %}
                                 {% for message in messages %}
-                                    <div class="alert alert-{{ message.tags }} alert-dismissible" role="alert">
+                                    <div class="alert alert-{% if message.tags == 'error' %}danger{% else %}{{ message.tags }}{% endif %} alert-dismissible" role="alert">
                                         <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                                         {{ message }}
                                     </div>