diff --git a/package.json b/package.json
index e9f6265..580c0c6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@davepagurek/glsl-autodiff",
-  "version": "0.0.17",
+  "version": "0.0.18",
   "main": "build/autodiff.js",
   "author": "Dave Pagurek <dave@davepagurek.com>",
   "license": "MIT",
diff --git a/src/vecFunctions.ts b/src/vecFunctions.ts
index aa93f8a..30d9ce3 100644
--- a/src/vecFunctions.ts
+++ b/src/vecFunctions.ts
@@ -241,11 +241,11 @@ VectorOp.prototype.adjustNormal = function(normal: VecParam, position: VecParam)
   const jacobian = new OffsetJacobian(this.ad, position, this)
   const dodu = new VecMult(this.ad, jacobian, u)
   const dodv = new VecMult(this.ad, jacobian, v)
-  return new Cross(
+  return new VecNormalize(this.ad, new Cross(
     this.ad,
     new VecSum(this.ad, u, dodu),
     new VecSum(this.ad, v, dodv),
-  )
+  ))
 }
 
 export function WithVecFunctions<T extends ADConstructor>(Base: T) {