diff --git a/Example/Tests/PerspectiveTransformSpecHelper.swift b/Example/Tests/PerspectiveTransformSpecHelper.swift
index f2f71c4..6a3d921 100644
--- a/Example/Tests/PerspectiveTransformSpecHelper.swift
+++ b/Example/Tests/PerspectiveTransformSpecHelper.swift
@@ -80,7 +80,7 @@ public func ≈(lhs: Expectation<[Vector3]>, rhs: (expected: [Vector3], delta: D
 
 extension Matrix3x3 {
     init(_ array: [Scalar]) {
-        let rows = 3
+        let rows = Vector3().scalarCount
         let scalars = rows * rows
         precondition(array.count == scalars, "should have 9 values for 3x3 matrix")
         var rowsOfVectors: [Vector3] = []
diff --git a/Pod/Classes/Matrix3x3+3D.swift b/Pod/Classes/Matrix3x3+3D.swift
index 8d4e4a6..ffa56d9 100644
--- a/Pod/Classes/Matrix3x3+3D.swift
+++ b/Pod/Classes/Matrix3x3+3D.swift
@@ -10,7 +10,6 @@ import simd
 
 extension Vector3 {
     static let one = Vector3(repeating: .one)
-    static let zero = Vector3(repeating: 0)
     static let lastIndex = Vector3().scalarCount - 1
     static let indexSlice = 0...Vector3.lastIndex
 }