diff --git a/implement/elm-fullstack/Program.cs b/implement/elm-fullstack/Program.cs
index c5fe6d9f..d586b9ab 100644
--- a/implement/elm-fullstack/Program.cs
+++ b/implement/elm-fullstack/Program.cs
@@ -1091,6 +1091,9 @@ static Uri MapUriForDefaultPort(string uriString, int defaultPort)
 
         static bool LooksLikeLocalSite(string site)
         {
+            if (site.StartsWith(".") || site.StartsWith("/"))
+                return true;
+
             if (Regex.IsMatch(site, "^http(|s)://", RegexOptions.IgnoreCase))
                 return false;