diff --git a/src/raytracer_nim.nim b/src/raytracer_nim.nim
index f7e5d9c..bf2ba60 100644
--- a/src/raytracer_nim.nim
+++ b/src/raytracer_nim.nim
@@ -1,4 +1,4 @@
-import "./tuple", "./canvas", "./matrix", "./transformations", math
+import "./tuple", "./canvas", "./transformations", math
 
 type 
   Projectile = object
@@ -34,11 +34,10 @@ proc clock() =
     var world = canvas(200, 200)
     var p = point(0.0, 0.0, 1.0)
     let colour = colour(1, 1, 1)
-    let oneHourRotation = rotationY(PI / 6)
     for i in 0..11:
         let target = p.scale(60.0, 0.0, 60.0).translate(100.0, 0.0, 100.0)
         world.writePixel(target.x, target.z, colour)
-        p = oneHourRotation * p
+        p = p.rotateY(PI / 6)
     writeFile("clock.ppm", world.toPPM())
 
 when isMainModule: