diff --git a/LinearAlgebra/test/SphericalTest.cs b/LinearAlgebra/test/SphericalTest.cs
index 8539dc0..4ec4429 100644
--- a/LinearAlgebra/test/SphericalTest.cs
+++ b/LinearAlgebra/test/SphericalTest.cs
@@ -46,7 +46,7 @@ namespace LinearAlgebra.Test {
             r = v1 + v2;
             Assert.AreEqual(Math.Sqrt(2), r.distance, 1.0E-05F, "Addition(1 0 90)");
             Assert.AreEqual(45.0f, r.direction.horizontal, "Addition(1 0 90)");
-            Assert.AreEqual(45.0f, r.direction.vertical, "Addition(1 0 90)");
+            Assert.AreEqual(45.0f, r.direction.vertical, 1.0E-05F, "Addition(1 0 90)");
         }
     }
 }