diff --git a/src/sliceActions/helpers/GCode.js b/src/sliceActions/helpers/GCode.js
index efadde9..48bc6dc 100644
--- a/src/sliceActions/helpers/GCode.js
+++ b/src/sliceActions/helpers/GCode.js
@@ -107,7 +107,7 @@ export default class {
     const lineLength = this._nozzlePosition.distanceTo(newNozzlePosition);
 
     const filamentSurfaceArea = Math.pow((filamentThickness / 2), 2) * Math.PI;
-    this._extruder += lineLength * nozzleDiameter * layerHeight / filamentSurfaceArea * flowRate;
+    this._extruder += lineLength * ((nozzleDiameter * layerHeight) / filamentSurfaceArea) * flowRate;
 
     this._addGCode({
       [MOVE]: 1,