diff --git a/bench/cec2020/vars.go b/bench/cec2020/vars.go
index 8fde5fb..ad20e9c 100644
--- a/bench/cec2020/vars.go
+++ b/bench/cec2020/vars.go
@@ -20,9 +20,10 @@ var Functions = map[string]func([]float64) float64{
 	"Hybrid1":              Hybrid1,
 	"Hybrid2":              Hybrid2,
 	"Hybrid3":              Hybrid3,
-	"Composition1":         Composition1,
-	"Composition2":         Composition2,
-	"Composition3":         Composition3,
+	// TODO(me): these panic right now.
+	// "Composition1":         Composition1,
+	// "Composition2":         Composition2,
+	// "Composition3":         Composition3,
 }
 
 // FuncNames represents a numbered list of function name.
@@ -34,9 +35,10 @@ var FuncNames = map[int]string{
 	4: "Hybrid1",
 	5: "Hybrid2",
 	6: "Hybrid3",
-	7: "Composition1",
-	8: "Composition2",
-	9: "Composition3",
+	// TODO(me): these panic right now.
+	// 7: "Composition1",
+	// 8: "Composition2",
+	// 9: "Composition3",
 }
 
 // SearchRange specifies the CEC2020 search range.