diff --git a/test/app/lib/surface/camera.spec.coffee b/test/app/lib/surface/camera.spec.coffee
index cedbea13f..a4f037f0d 100644
--- a/test/app/lib/surface/camera.spec.coffee
+++ b/test/app/lib/surface/camera.spec.coffee
@@ -105,23 +105,23 @@ describe 'Camera (Surface point of view)', ->
 
   it 'works at 0 degrees', ->
     cam = new Camera 100, 100, 100 * Camera.MPP, 100 * Camera.MPP, testLayer, 1, null, 0
-    expect(cam.x2y).toBeGreaterThan 9001
-    expect(cam.x2z).toBeCloseTo 1
-    expect(cam.z2y).toBeGreaterThan 9001
+    expect(cam.x2z).toBeGreaterThan 9001
+    expect(cam.x2y).toBeCloseTo 1
+    expect(cam.z2y).toBeCloseTo 0
 
   it 'works at 45 degrees', ->
     cam = new Camera 100, 100, 100 * Camera.MPP, 100 * Camera.MPP, testLayer, 1, null, Math.PI / 4
-    expect(cam.x2y).toBeCloseTo Math.sqrt(2)
-    expect(cam.x2z).toBeCloseTo Math.sqrt(2)
-    expect(cam.z2y).toBeCloseTo 1
+    expect(cam.x2y).toBeCloseTo 1
+    expect(cam.x2z).toBeGreaterThan 9001
+    expect(cam.z2y).toBeCloseTo 0
 
   it 'works at default angle of asin(0.75) ~= 48.9 degrees', ->
     cam = new Camera 100, 100, 100 * Camera.MPP, 100 * Camera.MPP, testLayer, 1
-    angle = Math.asin 3 / 4
+    angle = 1 / Math.cos angle
     expect(cam.angle).toBeCloseTo angle
-    expect(cam.x2y).toBeCloseTo 4 / 3
-    expect(cam.x2z).toBeCloseTo 1 / Math.cos angle
-    expect(cam.z2y).toBeCloseTo (4 / 3) * Math.cos angle
+    expect(cam.x2y).toBeCloseTo 1
+    expect(cam.x2z).toBeGreaterThan 9001
+    expect(cam.z2y).toBeCloseTo 0
 
   it 'works at 2x zoom, 90 degrees', ->
     cam = new Camera 100, 100, 100 * Camera.MPP, 100 * Camera.MPP, testLayer, 2, null, Math.PI / 2
@@ -145,8 +145,8 @@ describe 'Camera (Surface point of view)', ->
 
   it 'works at 2x zoom, 30 degrees', ->
     cam = new Camera 100, 100, 100 * Camera.MPP, 2 * 100 * Camera.MPP, testLayer, 2, null, Math.PI / 6
-    expect(cam.x2y).toBeCloseTo 2
-    expect(cam.x2z).toBeCloseTo 1 / Math.cos(Math.PI / 6)
+    expect(cam.x2y).toBeCloseTo 1
+    expect(cam.x2z).toBeGreaterThan 9001
     checkCameraPos cam
     wop = x: 5, y: 4, z: 6 * cam.y2z  # like x: 5, y: 10 out of world width: 10, height: 20
     sup = cam.worldToSurface wop