diff --git a/src/leafy/Button.cpp b/src/leafy/Button.cpp
index 65604f7..bb70136 100644
--- a/src/leafy/Button.cpp
+++ b/src/leafy/Button.cpp
@@ -13,9 +13,10 @@
 #include <SFML/Graphics/Texture.hpp>
 
 #include <cmath>
-#include <math.h>
 
-#define _USE_MATH_DEFINES
+#ifndef _PI
+#define _PI 3.14159265358979323846
+#endif
 
 Button::Button(const sf::Vector2f& radius, float pointCount)
     : m_radius(radius)
@@ -59,7 +60,7 @@ std::size_t Button::getPointCount() const
 }
 sf::Vector2f Button::getPoint(std::size_t index) const
 {
-    float angle = index * 2 * M_PI / getPointCount() - M_PI / 2;
+    float angle = index * 2 * _PI / getPointCount() - _PI / 2;
     float x = std::cos(angle) * m_radius.x;
     float y = std::sin(angle) * m_radius.y;
     return sf::Vector2f(m_radius.x + x, m_radius.y + y);
diff --git a/src/leafy/ConvexShape.cpp b/src/leafy/ConvexShape.cpp
index d7e0a28..14f7004 100644
--- a/src/leafy/ConvexShape.cpp
+++ b/src/leafy/ConvexShape.cpp
@@ -10,7 +10,9 @@
 
 #include <cmath>
 
-#define _USE_MATH_DEFINES
+#ifndef _PI
+#define _PI 3.14159265358979323846
+#endif
 
 namespace sf
 {
@@ -40,7 +42,7 @@ namespace sf
     }
     sf::Vector2f ConvexShape::getPoint(std::size_t index) const
     {
-        float angle = index * 2 * M_PI / getPointCount() - M_PI / 2;
+        float angle = index * 2 * _PI / getPointCount() - _PI / 2;
         float x = std::cos(angle) * m_radius.x;
         float y = std::sin(angle) * m_radius.y;
         return sf::Vector2f(m_radius.x + x, m_radius.y + y);
diff --git a/src/leafy/StadiumShape.cpp b/src/leafy/StadiumShape.cpp
index f3d9989..3ea246f 100644
--- a/src/leafy/StadiumShape.cpp
+++ b/src/leafy/StadiumShape.cpp
@@ -9,7 +9,10 @@
 #include <leafy/StadiumShape.hpp>
 
 #include <cmath>
-#define _USE_MATH_DEFINES
+
+#ifndef _PI
+#define _PI 3.14159265358979323846
+#endif
 
 sf::StadiumShape::StadiumShape(float radius) :
 m_size(300.0f, 60.0f),
@@ -97,8 +100,8 @@ sf::Vector2f sf::StadiumShape::getPoint(std::size_t index) const
             break;
     }
 
-    return sf::Vector2f(m_radius * std::cos(delta_angle * (index - center_index) * M_PI / 180.0f) + center.x,
-                       -m_radius * std::sin(delta_angle * (index - center_index) * M_PI / 180.0f) + center.y);
+    return sf::Vector2f(m_radius * std::cos(delta_angle * (index - center_index) * _PI / 180.0f) + center.x,
+                       -m_radius * std::sin(delta_angle * (index - center_index) * _PI / 180.0f) + center.y);
 }
 
 #undef _USE_MATH_DEFINES