diff --git a/src/sass/gtk/_common-3.0.scss b/src/sass/gtk/_common-3.0.scss
index 2463564..9ae9117 100644
--- a/src/sass/gtk/_common-3.0.scss
+++ b/src/sass/gtk/_common-3.0.scss
@@ -3516,10 +3516,11 @@ expander {
 calendar {
   color: $fg_color;
   border: 1px solid $borders_color;
-  border-radius: $bt_radius;
   padding: 2px $container_padding;
   margin: 0;
 
+  .csd & { border-radius: $bt_radius; }
+
   &:selected {
     @extend %selected_items;
     border-radius: $circular_radius;