diff --git a/lib/_http_common.js b/lib/_http_common.js
index a1fe29217f59d5..4c8d3c3850b2fa 100644
--- a/lib/_http_common.js
+++ b/lib/_http_common.js
@@ -78,7 +78,7 @@ function parserOnHeadersComplete(versionMajor, versionMinor, headers, method,
   parser.incoming = new IncomingMessage(parser.socket);
   parser.incoming.httpVersionMajor = versionMajor;
   parser.incoming.httpVersionMinor = versionMinor;
-  parser.incoming.httpVersion = versionMajor + '.' + versionMinor;
+  parser.incoming.httpVersion = `${versionMajor}.${versionMinor}`;
   parser.incoming.url = url;
 
   var n = headers.length;