diff --git a/addons/mrp_subcontracting/__manifest__.py b/addons/mrp_subcontracting/__manifest__.py
index d70b6fa22b8..3c95ac63297 100644
--- a/addons/mrp_subcontracting/__manifest__.py
+++ b/addons/mrp_subcontracting/__manifest__.py
@@ -54,7 +54,6 @@
             'web/static/src/scss/mimetypes.scss',
             'web/static/src/scss/ui.scss',
             'web/static/src/legacy/scss/ui.scss',
-            'web/static/src/legacy/scss/modal.scss',
             'web/static/src/views/fields/translation_dialog.scss',
             'web/static/src/scss/fontawesome_overridden.scss',
 
diff --git a/addons/project/__manifest__.py b/addons/project/__manifest__.py
index b0353bf3ddf..cc14f87e338 100644
--- a/addons/project/__manifest__.py
+++ b/addons/project/__manifest__.py
@@ -104,7 +104,6 @@
             'web/static/src/scss/mimetypes.scss',
             'web/static/src/scss/ui.scss',
             'web/static/src/legacy/scss/ui.scss',
-            'web/static/src/legacy/scss/modal.scss',
             'web/static/src/views/fields/translation_dialog.scss',
             'web/static/src/scss/fontawesome_overridden.scss',
 
@@ -140,7 +139,6 @@
             'web/static/src/legacy/js/libs/autocomplete.js',
             'web/static/src/legacy/js/libs/bootstrap.js',
             'web/static/src/legacy/js/libs/jquery.js',
-
             ('include', 'web._assets_bootstrap_backend'),
 
             'base/static/src/css/modules.css',
diff --git a/addons/web/__manifest__.py b/addons/web/__manifest__.py
index b9f65874e04..5e89180fe18 100644
--- a/addons/web/__manifest__.py
+++ b/addons/web/__manifest__.py
@@ -61,7 +61,6 @@ This module provides the core of the Odoo Web Client.
             'web/static/src/scss/ui.scss',
             'web/static/src/views/fields/translation_dialog.scss',
             'web/static/src/legacy/scss/ui.scss',
-            'web/static/src/legacy/scss/modal.scss',
 
             'web/static/src/legacy/js/promise_extension.js',
 
@@ -89,13 +88,6 @@ This module provides the core of the Odoo Web Client.
             'web/static/src/legacy/js/libs/autocomplete.js',
             'web/static/src/legacy/js/libs/bootstrap.js',
             'web/static/src/legacy/js/libs/jquery.js',
-            'web/static/src/legacy/js/core/class.js',
-            'web/static/src/legacy/js/core/dialog.js',
-            'web/static/src/legacy/xml/dialog.xml',
-            'web/static/src/legacy/js/core/dom.js',
-            'web/static/src/legacy/js/core/mixins.js',
-            'web/static/src/legacy/js/core/service_mixins.js',
-            'web/static/src/legacy/js/core/widget.js',
 
             'base/static/src/css/modules.css',
 
diff --git a/addons/web_editor/__manifest__.py b/addons/web_editor/__manifest__.py
index 11e247195b9..3a3cb1f0095 100644
--- a/addons/web_editor/__manifest__.py
+++ b/addons/web_editor/__manifest__.py
@@ -98,6 +98,15 @@ Odoo Web Editor widget.
             'web_editor/static/src/js/editor/odoo-editor/src/checklist.scss',
         ],
         'web_editor.assets_wysiwyg': [
+            # legacy stuff that are no longer in assets_backend
+            'web/static/src/legacy/js/core/class.js',
+            'web/static/src/legacy/js/core/dialog.js',
+            'web/static/src/legacy/xml/dialog.xml',
+            'web/static/src/legacy/js/core/dom.js',
+            'web/static/src/legacy/js/core/mixins.js',
+            'web/static/src/legacy/js/core/service_mixins.js',
+            'web/static/src/legacy/js/core/widget.js',
+
             # lib
             'web_editor/static/lib/cropperjs/cropper.css',
             'web_editor/static/lib/cropperjs/cropper.js',