diff --git a/include/cpp3ds/Window/BottomScreen_sim.hpp b/include/cpp3ds/Window/BottomScreen_sim.hpp
index e8000fd..1262996 100644
--- a/include/cpp3ds/Window/BottomScreen_sim.hpp
+++ b/include/cpp3ds/Window/BottomScreen_sim.hpp
@@ -4,8 +4,8 @@
 #include <cpp3ds/Simulator/Simulator.hpp>
 #include <cpp3ds/Window/Screen.hpp>
 
-#define BOTTOM_X (400-320)/2
-#define BOTTOM_Y 240 + SIM_OUTLINE_THICKNESS*2
+#define BOTTOM_X ((400-320)/2)
+#define BOTTOM_Y (240 + SIM_OUTLINE_THICKNESS*2)
 #define BOTTOM_WIDTH 320
 #define BOTTOM_HEIGHT 240