diff --git a/packages/mads-vec2/src/index.ts b/packages/mads-vec2/src/index.ts
index d42b651d..5ee22cba 100644
--- a/packages/mads-vec2/src/index.ts
+++ b/packages/mads-vec2/src/index.ts
@@ -2,10 +2,7 @@ export class Vector2 {
   constructor(public x = 0, public y = 0) {}
 
   public get length() {
-    const x = this.x;
-    const y = this.y;
-
-    return Math.sqrt(x * x + y * y);
+    return Math.sqrt(this.x * this.x + this.y * this.y);
   }
 
   public add(vector: Vector2) {
@@ -34,8 +31,10 @@ export class Vector2 {
   }
 
   public normalize() {
-    this.x /= this.length;
-    this.y /= this.length;
+    const length = this.length;
+
+    this.x /= length;
+    this.y /= length;
   }
 
   // Angle in rad.
diff --git a/packages/mads-vec2/tests/index.spec.ts b/packages/mads-vec2/tests/index.spec.ts
index 70c97a19..33d7ca8f 100644
--- a/packages/mads-vec2/tests/index.spec.ts
+++ b/packages/mads-vec2/tests/index.spec.ts
@@ -71,6 +71,7 @@ describe("mads-vec2", () => {
   it("Vector2.normalize", () => {
     const a = new Vector2(5, 0);
     const b = new Vector2(0, -5);
+    const c = new Vector2(2, 5);
 
     a.normalize();
     expect(a.length).toBe(1);
@@ -79,6 +80,11 @@ describe("mads-vec2", () => {
     b.normalize();
     expect(b.length).toBe(1);
     expect(b.y).toBe(-1);
+
+    c.normalize();
+    expect(c.length).toBeCloseTo(1);
+    expect(c.x).toBeCloseTo(0.37139068, 7);
+    expect(c.y).toBeCloseTo(0.92847669, 7);
   });
 
   it("Vector2.rotate", () => {
diff --git a/packages/mads-vec3/src/index.ts b/packages/mads-vec3/src/index.ts
index 59cad383..2585d874 100644
--- a/packages/mads-vec3/src/index.ts
+++ b/packages/mads-vec3/src/index.ts
@@ -2,11 +2,7 @@ export class Vector3 {
   constructor(public x = 0, public y = 0, public z = 0) {}
 
   public get length() {
-    const x = this.x;
-    const y = this.y;
-    const z = this.z;
-
-    return Math.sqrt(x * x + y * y + z * z);
+    return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
   }
 
   public add(vector: Vector3) {
@@ -40,9 +36,11 @@ export class Vector3 {
   }
 
   public normalize() {
-    this.x /= this.length;
-    this.y /= this.length;
-    this.z /= this.length;
+    const length = this.length;
+
+    this.x /= length;
+    this.y /= length;
+    this.z /= length;
   }
 
   public equals(vector: Vector3) {
diff --git a/packages/mads-vec3/tests/index.spec.ts b/packages/mads-vec3/tests/index.spec.ts
index 6a96ef1f..76cb1035 100644
--- a/packages/mads-vec3/tests/index.spec.ts
+++ b/packages/mads-vec3/tests/index.spec.ts
@@ -81,6 +81,7 @@ describe("mads-vec3", () => {
     const a = new Vector3(5, 0, 0);
     const b = new Vector3(0, -5, 0);
     const c = new Vector3(0, 0, -5);
+    const d = new Vector3(2, 3, 4);
 
     a.normalize();
     expect(a.length).toBe(1);
@@ -93,6 +94,12 @@ describe("mads-vec3", () => {
     c.normalize();
     expect(c.length).toBe(1);
     expect(c.z).toBe(-1);
+
+    d.normalize();
+    expect(d.length).toBeCloseTo(1);
+    expect(d.x).toBeCloseTo(0.371391, 5);
+    expect(d.y).toBeCloseTo(0.557086, 5);
+    expect(d.z).toBeCloseTo(0.742781, 5);
   });
 
   it("Vector3.equals", () => {