diff --git a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig
index 165236ef61..5affc7a6a1 100644
--- a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig
+++ b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig
@@ -167,7 +167,14 @@
             {% set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' ' ~ parent_label_class)|trim}) %}
         {% endif %}
         {% if label is not same as(false) and label is empty %}
-            {% set label = name|humanize %}
+            {%- if label_format is not empty -%}
+                {% set label = label_format|replace({
+                    '%name%': name,
+                    '%id%': id,
+                }) %}
+            {%- else -%}
+                {% set label = name|humanize %}
+            {%- endif -%}
         {% endif %}
         <label{% for attrname, attrvalue in label_attr %} {{ attrname }}="{{ attrvalue }}"{% endfor %}>
             {{- widget|raw }} {{ label is not same as(false) ? (translation_domain is same as(false) ? label : label|trans({}, translation_domain)) -}}