diff --git a/src/UrlGenerator.php b/src/UrlGenerator.php
index 5dcf59f1..c4114ba8 100644
--- a/src/UrlGenerator.php
+++ b/src/UrlGenerator.php
@@ -88,7 +88,7 @@ class UrlGenerator extends RoutingBase {
 		}
 		$path = implode('/', $path_segments);
 
-		$scheme = (isset($_SERVER['HTTPS'])) ? 'https:' : '';
+		$scheme = (isset($_SERVER['HTTPS'])) ? 'https:' : 'http';
 
 		return "{$scheme}//{$this->host}/{$path}";
 	}