diff --git a/src/app/shipyard/Calculations.js b/src/app/shipyard/Calculations.js
index a994b1e4..e6058073 100644
--- a/src/app/shipyard/Calculations.js
+++ b/src/app/shipyard/Calculations.js
@@ -229,7 +229,7 @@ export function calcSpeed(mass, baseSpeed, thrusters, engpip, eng, boostFactor,
  * Calculate pitch for a given setup
  * @param {number}   mass         the mass of the ship
  * @param {number}   basePitch    the base pitch of the ship
- * @param {ojbect}   thrusters    the thrusters of the ship
+ * @param {object}   thrusters    the thrusters of the ship
  * @param {number}   engpip       the multiplier per pip to engines
  * @param {number}   eng          the pips to engines
  * @param {number}   boostFactor  the boost factor for ths ship