diff --git a/Robust.Shared/Physics/Transform.cs b/Robust.Shared/Physics/Transform.cs
index 8297079753b..149c11ce022 100644
--- a/Robust.Shared/Physics/Transform.cs
+++ b/Robust.Shared/Physics/Transform.cs
@@ -23,6 +23,7 @@
 using System;
 using System.Numerics;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
 using JetBrains.Annotations;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
@@ -166,10 +167,10 @@ public Quaternion2D(float angle)
 
         public Quaternion2D(Angle angle)
         {
-            var radians = (float) angle.Theta;
+            var radians = angle.Theta;
 
-            C = MathF.Cos(radians);
-            S = MathF.Sin(radians);
+            C = (float) Math.Cos(radians);
+            S = (float) Math.Sin(radians);
         }
 
         public Quaternion2D Set(float angle)