diff --git a/src/app/shipyard/Calculations.js b/src/app/shipyard/Calculations.js
index 730d0c42..6bf2621b 100644
--- a/src/app/shipyard/Calculations.js
+++ b/src/app/shipyard/Calculations.js
@@ -88,12 +88,12 @@ export function speed(mass, baseSpeed, thrusters, engpip) {
 
 /**
  * Calculate pip multiplier for speed.
- * @param {number} topSpeed The top speed of ship in data
  * @param {number} baseSpeed The base speed of ship in data
+ * @param {number} topSpeed The top speed of ship in data
  * @return {number} The multiplier that pips affect speed.
  */
-export function calcPipSpeed(topSpeed, baseSpeed) {
-  return 1 - ((topSpeed - ((topSpeed - baseSpeed) / 4)) / topSpeed);
+export function calcPipSpeed(baseSpeed, topSpeed) {
+  return (topSpeed - baseSpeed) / (4 * topSpeed);
 }
 
 /**