diff --git a/vm/doc.go b/vm/doc.go
new file mode 100644
index 0000000..5ef8993
--- /dev/null
+++ b/vm/doc.go
@@ -0,0 +1,5 @@
+/*
+Package vm implements a virtual machine based synthesizer that runs Sointu
+bytecode, and methods to convert patches into bytecode.
+*/
+package vm
diff --git a/vm/generate/generate.go b/vm/generate/generate.go
index 3bc177c..c898356 100644
--- a/vm/generate/generate.go
+++ b/vm/generate/generate.go
@@ -21,9 +21,9 @@ func main() {
 	outputFile, err := os.Create("opcodes.go")
 	check(err)
 	defer outputFile.Close()
-	fmt.Fprintln(outputFile, "// Code generated by go generate; DO NOT EDIT.")
 	fmt.Fprintln(outputFile, "package vm")
 	fmt.Fprintln(outputFile, "")
+	fmt.Fprintln(outputFile, "// Code generated by go generate; DO NOT EDIT.")
 	fmt.Fprintln(outputFile, "const (")
 	features := vm.AllFeatures{}
 	max := 0
diff --git a/vm/opcodes.go b/vm/opcodes.go
index 4677386..9906ff6 100644
--- a/vm/opcodes.go
+++ b/vm/opcodes.go
@@ -1,6 +1,6 @@
-// Code generated by go generate; DO NOT EDIT.
 package vm
 
+// Code generated by go generate; DO NOT EDIT.
 const (
 	opAdd        = 1
 	opAddp       = 2