diff --git a/Angle.cpp b/Angle.cpp
index 67a1f7e..d000f6b 100644
--- a/Angle.cpp
+++ b/Angle.cpp
@@ -76,7 +76,7 @@ float Angle::SineRuleAngle(float a, float beta, float b) {
 template <> Angle2<float> Angle2<float>::Rad2Deg = 57.29578F;
 template <> Angle2<float> Angle2<float>::Deg2Rad = 0.0174532924F;
 
-template <> Angle2<float> Angle2<float>::PI = 3.1415927410125732421875F;
+template <> Angle2<float> Angle2<float>::pi = 3.1415927410125732421875F;
 
 template <> Angle2<float> Angle2<float>::Normalize(Angle2<float> angle) {
   float angleValue = angle;
diff --git a/Angle.h b/Angle.h
index 9dcc40c..edabf65 100644
--- a/Angle.h
+++ b/Angle.h
@@ -14,7 +14,7 @@ public:
   static Angle2<T> Rad2Deg;
   static Angle2<T> Deg2Rad;
 
-  static Angle2<T> PI;
+  static Angle2<T> pi;
 
   static Angle2<T> Normalize(Angle2<T> angle);
   static Angle2<T> Clamp(Angle2<T> angle, Angle2<T> min, Angle2<T> max);