diff --git a/hiboo/templates/macros.html b/hiboo/templates/macros.html
index 117e6b222d9b059e57246295db546371165fa46d..1db0c5a55b44a8e25f0098d888e0ee41e378e8d9 100644
--- a/hiboo/templates/macros.html
+++ b/hiboo/templates/macros.html
@@ -119,7 +119,7 @@
 
 {% macro form_field(field) %}
   {% if field.type == 'SubmitField' %}
-  {{ form_fields((field,), label=False, class="btn btn-default", **kwargs) }}
+  {{ form_fields((field,), label=False, class="btn btn-info", **kwargs) }}
   {% elif field.type not in ('HiddenField', 'CSRFTokenField') %}
   {{ form_fields((field,), **kwargs) }}
   {% endif %}