diff --git a/src/go/types/hilbert_test.go b/src/go/types/hilbert_test.go
index 3b56a8204b..916d6fdba2 100644
--- a/src/go/types/hilbert_test.go
+++ b/src/go/types/hilbert_test.go
@@ -50,8 +50,7 @@ func TestHilbert(t *testing.T) {
 func program(n int, out string) []byte {
 	var g gen
 
-	g.p(`// WARNING: GENERATED FILE - DO NOT MODIFY MANUALLY!
-// (To generate, in go/types directory: go test -run=Hilbert -H=%d -out=%q)
+	g.p(`// Code generated by: go test -run=Hilbert -H=%d -out=%q. DO NOT EDIT.
 
 // This program tests arbitrary precision constant arithmetic
 // by generating the constant elements of a Hilbert matrix H,