diff --git a/locust/templates/index.html b/locust/templates/index.html
index 2da3c24db9..c87e017654 100644
--- a/locust/templates/index.html
+++ b/locust/templates/index.html
@@ -15,7 +15,7 @@
diff --git a/locust/web.py b/locust/web.py
index 8995b4052c..590fbe8b8f 100644
--- a/locust/web.py
+++ b/locust/web.py
@@ -547,7 +547,7 @@ def update_template_args(self):
"is_distributed": is_distributed,
"user_count": self.environment.runner.user_count,
"version": version,
- "host": host,
+ "host": host if host else "",
"history": stats.history if stats.num_requests > 0 else {},
"override_host_warning": override_host_warning,
"num_users": options and options.num_users,