diff --git a/config/packages/twig.yaml b/config/packages/twig.yaml
index 7bfb15c8..fe8bd4ae 100644
--- a/config/packages/twig.yaml
+++ b/config/packages/twig.yaml
@@ -1,6 +1,6 @@
 twig:
     default_path: '%kernel.project_dir%/templates'
-    form_themes: ['bootstrap_5_horizontal_layout.html.twig', 'Form/extendedBootstrap4_layout.html.twig', 'Form/permissionLayout.html.twig', 'Form/FilterTypesLayout.html.twig']
+    form_themes: ['bootstrap_5_horizontal_layout.html.twig', 'form/extended_bootstrap_layout.html.twig', 'form/permission_layout.html.twig', 'form/filter_types_layout.html.twig']
 
     paths:
         '%kernel.project_dir%/assets/css': css
diff --git a/templates/AdminPages/ProjectAdmin.html.twig b/templates/AdminPages/ProjectAdmin.html.twig
index 384f91d2..8a2dfbc1 100644
--- a/templates/AdminPages/ProjectAdmin.html.twig
+++ b/templates/AdminPages/ProjectAdmin.html.twig
@@ -48,7 +48,7 @@
 
 {% block additional_panes %}
     <div class="tab-pane" id="bom">
-        {% form_theme form.bom_entries with ['Form/collection_types_layout.html.twig'] %}
+        {% form_theme form.bom_entries with ['form/collection_types_layout.html.twig'] %}
         {{ form_errors(form.bom_entries) }}
         {{ form_widget(form.bom_entries) }}
     </div>
diff --git a/templates/Form/collection_types_layout.html.twig b/templates/form/collection_types_layout.html.twig
similarity index 100%
rename from templates/Form/collection_types_layout.html.twig
rename to templates/form/collection_types_layout.html.twig
diff --git a/templates/Form/extendedBootstrap4_layout.html.twig b/templates/form/extended_bootstrap_layout.html.twig
similarity index 100%
rename from templates/Form/extendedBootstrap4_layout.html.twig
rename to templates/form/extended_bootstrap_layout.html.twig
diff --git a/templates/Form/FilterTypesLayout.html.twig b/templates/form/filter_types_layout.html.twig
similarity index 100%
rename from templates/Form/FilterTypesLayout.html.twig
rename to templates/form/filter_types_layout.html.twig
diff --git a/templates/Form/permissionLayout.html.twig b/templates/form/permission_layout.html.twig
similarity index 100%
rename from templates/Form/permissionLayout.html.twig
rename to templates/form/permission_layout.html.twig
diff --git a/templates/parts/edit/edit_form_styles.html.twig b/templates/parts/edit/edit_form_styles.html.twig
index 5d8a5f72..cb3f7d24 100644
--- a/templates/parts/edit/edit_form_styles.html.twig
+++ b/templates/parts/edit/edit_form_styles.html.twig
@@ -1,5 +1,5 @@
 {% block pricedetail_widget %}
-    {% form_theme form.currency 'Form/extendedBootstrap4_layout.html.twig' %}
+    {% form_theme form.currency 'form/extended_bootstrap_layout.html.twig' %}
     {% import 'components/collection_type.macro.html.twig' as collection %}
 
     <tr>
diff --git a/templates/projects/add_parts.html.twig b/templates/projects/add_parts.html.twig
index 7a7ae61f..0b194194 100644
--- a/templates/projects/add_parts.html.twig
+++ b/templates/projects/add_parts.html.twig
@@ -12,7 +12,7 @@
     {{ form_start(form) }}
 
     {{ form_row(form.project) }}
-    {% form_theme form.bom_entries with ['Form/collection_types_layout.html.twig'] %}
+    {% form_theme form.bom_entries with ['form/collection_types_layout.html.twig'] %}
     {{ form_widget(form.bom_entries) }}
 
     {{ form_row(form.submit) }}