diff --git a/src/math_graphics.cpp b/src/math_graphics.cpp
index 6307909..810943e 100644
--- a/src/math_graphics.cpp
+++ b/src/math_graphics.cpp
@@ -32,7 +32,7 @@ namespace M {
     }
 
     float radians(float degrees) {
-        return degrees * (M_PIf / 180.0f);
+        return degrees * (3.14159265358979323846f / 180.0f);
     }
 
     V2 V2_(float x, float y) {