diff --git a/lib/netlifyFunctionTemplate.js b/lib/netlifyFunctionTemplate.js
index 15a7da8..e10c818 100644
--- a/lib/netlifyFunctionTemplate.js
+++ b/lib/netlifyFunctionTemplate.js
@@ -31,6 +31,12 @@ exports.handler = (event, context, callback) => {
     process.env.BINARY_SUPPORT = "yes";
   }
 
+  // When running at the netlify, the header "host" is not set in
+  // multiValueHeaders. So we manually set this property.
+  if(!event.multiValueHeaders.hasOwnProperty('host')) {
+    event.multiValueHeaders['host'] = [event.headers['host']]
+  }
+
   // Get the request URL
   const { path } = event;
   console.log("[request]", path);