diff --git a/exercises/concept/cars-assemble/.docs/instructions.md b/exercises/concept/cars-assemble/.docs/instructions.md
index a01a68726..5ad3ea97f 100644
--- a/exercises/concept/cars-assemble/.docs/instructions.md
+++ b/exercises/concept/cars-assemble/.docs/instructions.md
@@ -13,7 +13,7 @@ You have two tasks.
 
 ## 1. Calculate the production rate per hour
 
-Implement the `CarsAssemble.productionRatePerHour()` method to calculate the assembly line's production rate per hour, taking into account its current assembly line's speed :
+Implement the `CarsAssemble.productionRatePerHour()` method to calculate the assembly line's production rate per hour, taking into account its current assembly line's speed and success rate:
 
 ```Java
 CarsAssemble.productionRatePerHour(6)