diff --git a/lemonauth/templates/lemonauth/tags/form_field.html b/lemonauth/templates/lemonauth/tags/form_field.html
index 80e319c..dd63630 100644
--- a/lemonauth/templates/lemonauth/tags/form_field.html
+++ b/lemonauth/templates/lemonauth/tags/form_field.html
@@ -1,6 +1,6 @@
-<div class="form-group{% if field.errors %} has-error{% endif %}">
+<div class="form-group">
 	<label for="{{ field.id_for_label }}">{{ field.label | lower }}</label>
-	<input id="{{ field.id_for_label }}" class="form-control" type="{{ field.field.widget.input_type }}"
+	<input id="{{ field.id_for_label }}" class="form-control{% if field.errors %}is-invalid{% endif %}" type="{{ field.field.widget.input_type }}"
 				 name="{{ field.html_name }}"{% if field.value %} value="{{ field.value }}"{% endif %}{% if field.help_text %} aria-describedby="{{ field.id_for_label }}-help"{% endif %} />
 	{% if field.help_text %}<p id="{{ field.id_for_label }}-help" class="form-text">{{ field.help_text }}</p>{% endif %}
 </div>