diff --git a/src/middleware/admin.js b/src/middleware/admin.js
index 84d34dfbd0..4d7aa44047 100644
--- a/src/middleware/admin.js
+++ b/src/middleware/admin.js
@@ -17,14 +17,23 @@ const controllers = {
 const middleware = module.exports;
 
 middleware.buildHeader = helpers.try(async (req, res, next) => {
-	res.locals.renderAdminHeader = true;
+	await doBuildHeader(req, res);
+	next();
+});
+
+middleware.buildHeaderAsync = async (req, res) => {
+	await doBuildHeader(req, res);
+};
+
+async function doBuildHeader(req, res) {
+	res.locals.renderHeaderType = 'admin';
+	res.locals.isAPI = false;
 	if (req.method === 'GET') {
 		await require('./index').applyCSRFasync(req, res);
 	}
-
+	await plugins.hooks.fire('filter:middleware.buildAdminHeader', { req: req, locals: res.locals });
 	res.locals.config = await controllers.admin.loadConfig(req);
-	next();
-});
+}
 
 middleware.checkPrivileges = helpers.try(async (req, res, next) => {
 	// Kick out guests, obviously
diff --git a/src/middleware/header.js b/src/middleware/header.js
index 383ef8e94e..b462a82695 100644
--- a/src/middleware/header.js
+++ b/src/middleware/header.js
@@ -19,7 +19,7 @@ middleware.buildHeaderAsync = async (req, res) => {
 };
 
 async function doBuildHeader(req, res) {
-	res.locals.renderHeader = true;
+	res.locals.renderHeaderType = 'client';
 	res.locals.isAPI = false;
 	if (req.method === 'GET') {
 		await require('./index').applyCSRFasync(req, res);
diff --git a/src/middleware/render.js b/src/middleware/render.js
index f348236884..3cbac1f22a 100644
--- a/src/middleware/render.js
+++ b/src/middleware/render.js
@@ -139,9 +139,9 @@ module.exports = function (middleware) {
 	}
 
 	async function loadHeaderFooterData(req, res, options) {
-		if (res.locals.renderHeader) {
+		if (res.locals.renderHeaderType === 'client') {
 			return await loadClientHeaderFooterData(req, res, options);
-		} else if (res.locals.renderAdminHeader) {
+		} else if (res.locals.renderHeaderType === 'admin') {
 			return await loadAdminHeaderFooterData(req, res, options);
 		}
 		return null;
@@ -382,13 +382,13 @@ module.exports = function (middleware) {
 
 	async function renderHeaderFooter(method, req, res, options, headerFooterData) {
 		let str = '';
-		if (res.locals.renderHeader) {
+		if (res.locals.renderHeaderType === 'client') {
 			if (method === 'renderHeader') {
 				str = await renderHeader(req, res, options, headerFooterData);
 			} else if (method === 'renderFooter') {
 				str = await renderFooter(req, res, options, headerFooterData);
 			}
-		} else if (res.locals.renderAdminHeader) {
+		} else if (res.locals.renderHeaderType === 'admin') {
 			if (method === 'renderHeader') {
 				str = await renderAdminHeader(req, res, options, headerFooterData);
 			} else if (method === 'renderFooter') {
@@ -400,7 +400,7 @@ module.exports = function (middleware) {
 
 	function getLang(req, res) {
 		let language = (res.locals.config && res.locals.config.userLang) || 'en-GB';
-		if (res.locals.renderAdminHeader) {
+		if (res.locals.renderHeaderType === 'admin') {
 			language = (res.locals.config && res.locals.config.acpLang) || 'en-GB';
 		}
 		return req.query.lang ? validator.escape(String(req.query.lang)) : language;