diff --git a/bench/functions.go b/bench/functions.go
index 7198dba..fae3d16 100644
--- a/bench/functions.go
+++ b/bench/functions.go
@@ -27,7 +27,7 @@ var FunctionParams = map[string]funcParams{
 	"De Jong 2nd": DeJong2Params,
 }
 
-// Schwefel computes a value of the Schwefel function for x.
+// Schwefel computes the value of the Schwefel function for x.
 func Schwefel(x []float64) float64 {
 	var res float64