diff --git a/thermion_dart/native/include/scene/GridOverlay.hpp b/thermion_dart/native/include/scene/GridOverlay.hpp
index c53266a1..9db9bc33 100644
--- a/thermion_dart/native/include/scene/GridOverlay.hpp
+++ b/thermion_dart/native/include/scene/GridOverlay.hpp
@@ -10,6 +10,9 @@
 #include "scene/SceneAsset.hpp"
 #include "material/grid.h"
 
+#ifndef M_PI
+    #define M_PI 3.14159265358979323846
+#endif
 
 namespace thermion {