diff --git a/engine/breeze/ui/ui.h b/engine/breeze/ui/ui.h
index b74e25b..fa56628 100644
--- a/engine/breeze/ui/ui.h
+++ b/engine/breeze/ui/ui.h
@@ -105,7 +105,6 @@ enum {
 };
 
 typedef struct BzUIBackgroundStyle {
-    f32   thickness;
     f32   roundness;
     Color normal;
     Color hover;