diff --git a/documentation/scripts/postbuild.js b/documentation/scripts/postbuild.js
index 8417abc3b7..07346e54b0 100644
--- a/documentation/scripts/postbuild.js
+++ b/documentation/scripts/postbuild.js
@@ -64,6 +64,14 @@ fs.writeFileSync(versionTextPath, hash)
 // robots txt generator
 const documentationDirectory = path.join(__dirname, ".."); // /git/starsky/documentation - without docs
 
+function readFile(rootPath, from) {
+	const filename = path.join(rootPath, from);
+	if (fs.existsSync(filename) === false) {
+		return null;
+	}
+	return fs.readFileSync(filename, { encoding: "utf8" });
+}
+
 function replaceRobotsTxt() {
 	let robots = readFile(documentationDirectory, path.join("static", "robots.template"));
 	console.log(robots.length >= 1 ? "robots.template contains content" : "robots.template is empty");
diff --git a/documentation/scripts/prestart.js b/documentation/scripts/prestart.js
index 91969e8185..3e6abd500c 100644
--- a/documentation/scripts/prestart.js
+++ b/documentation/scripts/prestart.js
@@ -50,14 +50,6 @@ function writeFile(to, content) {
   fs.writeFileSync(filename, content);
 }
 
-function readFile(rootPath, from) {
-  const filename = path.join(rootPath, from);
-  if (fs.existsSync(filename) === false) {
-    return null;
-  }
-  return fs.readFileSync(filename, { encoding: "utf8" });
-}
-
 copyFileSync("history.md", "advanced-options/history.md");
 copyFileSync("starsky/telemetry.md", "advanced-options/starsky/telemetry.md");