diff --git a/libui/include/ui/Layout.h b/libui/include/ui/Layout.h
index 62ebe8c8..66e4976b 100644
--- a/libui/include/ui/Layout.h
+++ b/libui/include/ui/Layout.h
@@ -43,7 +43,7 @@ namespace ui
         Vector<Widget*> m_widgets;
         AdjustHeight m_adjust_height;
         AdjustWidth m_adjust_width;
-        int m_used_width;
+        int m_used_width { 0 };
     };
 
     class VerticalLayout final : public Widget
@@ -64,6 +64,6 @@ namespace ui
         Vector<Widget*> m_widgets;
         AdjustHeight m_adjust_height;
         AdjustWidth m_adjust_width;
-        int m_used_height;
+        int m_used_height { 0 };
     };
 }