diff --git a/AsbCloudWebApi.Tests/ServicesTests/TrajectoryVisualizationServiceTest.cs b/AsbCloudWebApi.Tests/ServicesTests/TrajectoryVisualizationServiceTest.cs
index ab57843e..7ba99ce0 100644
--- a/AsbCloudWebApi.Tests/ServicesTests/TrajectoryVisualizationServiceTest.cs
+++ b/AsbCloudWebApi.Tests/ServicesTests/TrajectoryVisualizationServiceTest.cs
@@ -66,7 +66,6 @@ namespace AsbCloudWebApi.Tests.ServicesTests
             Assert.Equal(50d, lastPoint.Z, 0.1d);
         }
 
-
         [Fact]
         public async Task GetTrajectoryAsync_Match()
         {
@@ -81,24 +80,11 @@ namespace AsbCloudWebApi.Tests.ServicesTests
             var service = new TrajectoryVisualizationService(mock.Object);
             var result = await service.GetTrajectoryAsync(1, CancellationToken.None);
             var lastPoint = result.Last();
+            var tolerance = 0.001d;
 
-            var deltaLength = plannedTrajectory[2].WellboreDepth - plannedTrajectory[1].WellboreDepth;
-            var zenith = plannedTrajectory[1].ZenithAngle * Math.PI / 1800;
-            var azimuth = plannedTrajectory[1].AzimuthGeo * Math.PI / 1800;
-
-            var dz = deltaLength * Math.Cos(zenith);
-            var xySurfaceSegmentProjectionLength = deltaLength * Math.Sin(zenith);
-            var dx = xySurfaceSegmentProjectionLength * Math.Cos(azimuth);
-            var dy = xySurfaceSegmentProjectionLength * Math.Sin(azimuth);
-
-            var Z = plannedTrajectory[1].WellboreDepth + dz;
-            var X = dx;
-            var Y = dy;
-
-            Assert.Equal(0d, lastPoint.X, 1d);
-            Assert.Equal(0d, lastPoint.Y, 1d);
-            Assert.Equal(50d, lastPoint.Z, 1d);
+            Assert.InRange(lastPoint.Z, 10 + tolerance, 20 - tolerance);
+            Assert.InRange(lastPoint.Y, 0 + tolerance, 10 - tolerance);
+            Assert.InRange(lastPoint.X, 0 + tolerance, 10 - tolerance);
         }
-
     }
 }