diff --git a/ts/smarturl.classes.smarturl.ts b/ts/smarturl.classes.smarturl.ts
index 1753a3f..d7e9322 100644
--- a/ts/smarturl.classes.smarturl.ts
+++ b/ts/smarturl.classes.smarturl.ts
@@ -36,6 +36,10 @@ export class Smarturl {
       console.log(`inferring port 443 for "https:"`);
       parsedUrl.port = '443';
     }
+    if (!parsedUrl.port && parsedUrl.protocol === 'http:') {
+      console.log(`inferring port 80 for "http:"`);
+      parsedUrl.port = '80';
+    }
     return parsedUrl;
   }
 }