diff --git a/addons/web/static/src/legacy/scss/bootstrap_overridden.scss b/addons/web/static/src/legacy/scss/bootstrap_overridden.scss
index b9908c8715c..21d6759d984 100644
--- a/addons/web/static/src/legacy/scss/bootstrap_overridden.scss
+++ b/addons/web/static/src/legacy/scss/bootstrap_overridden.scss
@@ -221,6 +221,8 @@ $modal-md: $o-modal-md !default;
 
 $modal-content-border-radius: $border-radius !default;
 
+$modal-scale-transform: none !default;
+
 // Breadcrumbs
 
 $breadcrumb-padding-y: 0 !default;