diff --git a/lib/part.ts b/lib/part.ts
index 48d0eef2eb4..908b320fe97 100644
--- a/lib/part.ts
+++ b/lib/part.ts
@@ -6,7 +6,7 @@ export class Part {
   id: string;
   render: boolean;
   points: {
-    [index: string]: Point;
+    [index: string]: Point | boolean;
   }
   paths: { [index: string]: Path; } = {};
   attributes = new Attributes();
diff --git a/lib/utils.ts b/lib/utils.ts
index 5c26a696aa2..aead7071dea 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -41,7 +41,7 @@ export function beamsCross(a1: Point, a2: Point, b1: Point, b2: Point): Point |
 
     // Find intersection
     let x = (iB - iA) / (slopeA - slopeB);
-    let y = slopeA * x *iA;
+    let y = slopeA * x + iA;
 
     return new Point(x, y);
   }
diff --git a/tests/utils.test.js b/tests/utils.test.js
index 36f480185d9..75a98c59020 100644
--- a/tests/utils.test.js
+++ b/tests/utils.test.js
@@ -31,28 +31,13 @@ it('should return a line intersection', () => {
   expect(utils.beamsCross(a,b,c,d)).to.be.false;
 
   // Debug
-  let e = new Point(0,0);
-  let f = new Point(25,25);
-  let g = new Point(0,60);
-  let h = new Point(25,35);
-  // Should be 30,30, but is 30,0
-  console.log(utils.beamsCross(e,f,g,h));
-        //$p->newPoint(2,25,25);
-        //$p->newPoint(3,0,60);
-        //$p->newPoint(4,25,35);
-        //$this->assertFalse($p->linesCross(1,2,3,4));
-        //$this->assertFalse($p->beamsCross(1,3,2,4));
-        //
-        //$expect = new \Freesewing\Point();
-        //$expect->setX(30);
-        //$expect->setY(30);
-        //$this->assertEquals($p->beamsCross(1,2,3,4), $expect);
-        //
-        //$p->newPoint(4,10,-10);
-        //$expect->setX(7.5);
-        //$expect->setY(7.5);
-        //$this->assertEquals($p->linesCross(1,2,3,4), $expect);
-  //
+  let e = new Point(213,222);
+  let f = new Point(220,214);
+  let g = new Point(213,44);
+  let h = new Point(248,222);
+  result = utils.beamsCross(e,f,g,h);
+  expect(result.x).to.equal(241.58);
+  expect(result.y).to.equal(189.34);
 });
 
 it('should return a line segment intersection', () => {