diff --git a/flask_bootstrap/templates/bootstrap/form.html b/flask_bootstrap/templates/bootstrap/form.html
index c540dc59..43c9ff82 100644
--- a/flask_bootstrap/templates/bootstrap/form.html
+++ b/flask_bootstrap/templates/bootstrap/form.html
@@ -85,7 +85,7 @@
             {%- if form_type == "inline" %}
                 {{ field.label(class="sr-only")|safe }}
             {% elif form_type == "horizontal" %}
-                {{ field.label(class="form-control-label " + (
+                {{ field.label(class="col-form-label " + (
                 " col-%s-%s" % horizontal_columns[0:2]))|safe }}
             {%- else -%}
                 {{ field.label(class="form-control-label")|safe }}
@@ -156,7 +156,7 @@
                     {% endif %}
                 {% endif %}
             {% elif form_type == "horizontal" %}
-                {{ field.label(class="form-control-label " + (" col-%s-%s" % horizontal_columns[0:2]))|safe }}
+                {{ field.label(class="col-form-label " + (" col-%s-%s" % horizontal_columns[0:2]))|safe }}
                 <div class=" col-{{ horizontal_columns[0] }}-{{ horizontal_columns[2] }}">
                     {% if field.type == 'FileField' %}
                         {% if field.errors %}