diff --git a/Structs/MathHelper.cs b/Structs/MathHelper.cs
deleted file mode 100644
index fc020f5..0000000
--- a/Structs/MathHelper.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace MoonTools.Core.Structs
-{
-    public static class MathHelper
-    {
-        public static double ToRadians(double angle)
-        {
-            return (System.Math.PI / 180) * angle;
-        }
-    }
-}
\ No newline at end of file
diff --git a/Tests/Transform2DTest.cs b/Tests/Transform2DTest.cs
index 32372f7..cb323e2 100644
--- a/Tests/Transform2DTest.cs
+++ b/Tests/Transform2DTest.cs
@@ -47,10 +47,10 @@ namespace Tests
         [Test]
         public void Compose()
         {
-            var transformA = new Transform2D(new Position2D(4, 1), 5f, new Vector2(3, 1));
-            var transformB = new Transform2D(new Position2D(15, 2), 12f, new Vector2(1, 2));
+            var transformA = new Transform2D(new Position2D(4, 1), (float)System.Math.PI / 2, new Vector2(3, 1));
+            var transformB = new Transform2D(new Position2D(15, 2), (float)System.Math.PI / 4, new Vector2(1, 2));
 
-            transformA.Compose(transformB).Should().BeEquivalentTo(new Transform2D(new Position2D(19, 3), 17f, new Vector2(3, 2)));
+            transformA.Compose(transformB).Should().BeEquivalentTo(new Transform2D(new Position2D(19, 3), 3 * (float)System.Math.PI / 4, new Vector2(3, 2)));
         }
     }
 }
\ No newline at end of file