diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index ef86a5f3f3..35680e477b 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1721,8 +1721,8 @@ headerbar {
 
 .background .titlebar {
   &:backdrop, & {
-    border-top-left-radius: 7px;
-    border-top-right-radius: 7px;
+    border-top-left-radius: $window_radius;
+    border-top-right-radius: $window_radius;
   }
 }
 
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 572bce6edf..99e6ce47ac 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -678,7 +678,7 @@ headerbar switch { margin-top: 9px; margin-bottom: 9px; }
 
 headerbar.titlebar headerbar:not(.titlebar) { background: none; box-shadow: none; }
 
-.background .titlebar:backdrop, .background .titlebar { border-top-left-radius: 7px; border-top-right-radius: 7px; }
+.background .titlebar:backdrop, .background .titlebar { border-top-left-radius: 10px; border-top-right-radius: 10px; }
 
 .background.tiled .titlebar:backdrop, .background.tiled .titlebar, .background.tiled-top .titlebar:backdrop, .background.tiled-top .titlebar, .background.tiled-right .titlebar:backdrop, .background.tiled-right .titlebar, .background.tiled-bottom .titlebar:backdrop, .background.tiled-bottom .titlebar, .background.tiled-left .titlebar:backdrop, .background.tiled-left .titlebar, .background.maximized .titlebar:backdrop, .background.maximized .titlebar, .background.solid-csd .titlebar:backdrop, .background.solid-csd .titlebar { border-top-left-radius: 0; border-top-right-radius: 0; }
 
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index b226d1c87e..33d82f78f4 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -686,7 +686,7 @@ headerbar switch { margin-top: 9px; margin-bottom: 9px; }
 
 headerbar.titlebar headerbar:not(.titlebar) { background: none; box-shadow: none; }
 
-.background .titlebar:backdrop, .background .titlebar { border-top-left-radius: 7px; border-top-right-radius: 7px; }
+.background .titlebar:backdrop, .background .titlebar { border-top-left-radius: 10px; border-top-right-radius: 10px; }
 
 .background.tiled .titlebar:backdrop, .background.tiled .titlebar, .background.tiled-top .titlebar:backdrop, .background.tiled-top .titlebar, .background.tiled-right .titlebar:backdrop, .background.tiled-right .titlebar, .background.tiled-bottom .titlebar:backdrop, .background.tiled-bottom .titlebar, .background.tiled-left .titlebar:backdrop, .background.tiled-left .titlebar, .background.maximized .titlebar:backdrop, .background.maximized .titlebar, .background.solid-csd .titlebar:backdrop, .background.solid-csd .titlebar { border-top-left-radius: 0; border-top-right-radius: 0; }