diff --git a/header.go b/header.go
new file mode 100644
index 0000000..1d18e91
--- /dev/null
+++ b/header.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"io"
+)
+
+func headerComment(w io.Writer) {
+	fmt.Fprintln(w, "")
+	fmt.Fprintln(w, "// This file was autogenerated with autogenpb", VERSION, "DO NOT EDIT")
+	fmt.Fprintln(w, "//     go install go.wit.com/apps/autogenpb@latest")
+	fmt.Fprintln(w, "//")
+	fmt.Fprintln(w, "// You can use it on simple protobuf files")
+	fmt.Fprintln(w, "// The .proto file must have a singular and plural form of a message")
+	fmt.Fprintln(w, "// (for those of you that know ruby on rails, it's like that)")
+	fmt.Fprintln(w, "//")
+	fmt.Fprintln(w, "// You can mark which repos you want to auto generate sort.pb.go and marshal.pb.go files for")
+	fmt.Fprintln(w, "//")
+	fmt.Fprintln(w, "// For an example,")
+	fmt.Fprintln(w, "//       go-clone go.wit.com/lib/protobuf/gitpb")
+	fmt.Fprintln(w, "//")
+	fmt.Fprintln(w, "")
+}
+
+func header(w io.Writer, names map[string]string) {
+	fmt.Fprintln(w, "package "+names["package"])
+	headerComment(w)
+	fmt.Fprintln(w, "import (")
+	fmt.Fprintln(w, "	\"fmt\"")
+	fmt.Fprintln(w, "	\"sort\"")
+	fmt.Fprintln(w, "	\"sync\"")
+	fmt.Fprintln(w, ")")
+	fmt.Fprintln(w, "")
+}
diff --git a/sort.go b/sort.go
index d8a3aa0..acb8325 100644
--- a/sort.go
+++ b/sort.go
@@ -59,34 +59,6 @@ func makeSortfile() {
 	iterEnd(f, sortmap)
 }
 
-func headerComment(w io.Writer) {
-	fmt.Fprintln(w, "")
-	fmt.Fprintln(w, "// This file was autogenerated with autogenpb.")
-	fmt.Fprintln(w, "//     go install go.wit.com/apps/autogenpb@latest")
-	fmt.Fprintln(w, "//")
-	fmt.Fprintln(w, "// You can use it on simple protobuf files")
-	fmt.Fprintln(w, "// The .proto file must have a singular and plural form of a message")
-	fmt.Fprintln(w, "// (for those of you that know ruby on rails, it's like that)")
-	fmt.Fprintln(w, "//")
-	fmt.Fprintln(w, "// You can mark which repos you want to auto generate sort.pb.go and marshal.pb.go files for")
-	fmt.Fprintln(w, "//")
-	fmt.Fprintln(w, "// For an example,")
-	fmt.Fprintln(w, "//       go-clone go.wit.com/lib/protobuf/gitpb")
-	fmt.Fprintln(w, "//")
-	fmt.Fprintln(w, "")
-}
-
-func header(w io.Writer, names map[string]string) {
-	fmt.Fprintln(w, "package "+names["package"])
-	headerComment(w)
-	fmt.Fprintln(w, "import (")
-	fmt.Fprintln(w, "	\"fmt\"")
-	fmt.Fprintln(w, "	\"sort\"")
-	fmt.Fprintln(w, "	\"sync\"")
-	fmt.Fprintln(w, ")")
-	fmt.Fprintln(w, "")
-}
-
 func syncLock(w io.Writer, names map[string]string) {
 	fmt.Fprintln(w, "// bad global lock until I figure out some other plan")
 	fmt.Fprintln(w, "// redo/fix protoc-gen-go 1.35 and do it there?")