diff --git a/LinearAlgebra/src/Spherical.cs b/LinearAlgebra/src/Spherical.cs
index 183aa01..e138e7c 100644
--- a/LinearAlgebra/src/Spherical.cs
+++ b/LinearAlgebra/src/Spherical.cs
@@ -106,7 +106,7 @@ namespace LinearAlgebra {
         // }
 
         public Vector3 ToVector3() {
-            float verticalRad = (float)(Math.PI / 2 - this.direction.vertical) * Angle.Deg2Rad;
+            float verticalRad = (float)(90 - this.direction.vertical) * Angle.Deg2Rad;
             float horizontalRad = this.direction.horizontal * Angle.Deg2Rad;
             float cosVertical = (float)Math.Cos(verticalRad);
             float sinVertical = (float)Math.Sin(verticalRad);