diff --git a/bench/cec2020/benchFunctions.go b/bench/cec2020/benchFunctions.go
index 6937f47..47acfe5 100644
--- a/bench/cec2020/benchFunctions.go
+++ b/bench/cec2020/benchFunctions.go
@@ -43,7 +43,9 @@ func BentCigar(x []float64) float64 {
 }
 
 // Schwefel is the "Shifted and Rotated Schwefel's Function" of CEC2020.
-func Schwefel(x []float64) float64 { return 0 }
+func Schwefel(x []float64) float64 {
+	return SchwefelModified(x)
+}
 
 // LunacekBiRastrigin is the "Shifted and Rotated Lunacek bi-Rastrigin Function" of CEC2020.
 func LunacekBiRastrigin(x []float64) float64 { return 0 }