diff --git a/lib/swagger.js b/lib/swagger.js
index ab7bfaf..ef9a1dc 100644
--- a/lib/swagger.js
+++ b/lib/swagger.js
@@ -100,7 +100,7 @@ function addRoute(app, uri, doc, opts) {
     // know that header at the time the data is built.
     if (hasBasePath) {
       var headers = req.headers;
-      var host = headers.Host || headers.host;
+      var host = headers['x-forwarded-host'] || headers['X-Forwarded-Host'] || headers.Host || headers.host;
       var protocol = headers['x-forwarded-proto'] || headers['X-Forwarded-Proto'] || opts.protocol || req.protocol
       doc.basePath = protocol + '://' + host + initialPath;
     }