diff --git a/certbot-apache/certbot_apache/http_01.py b/certbot-apache/certbot_apache/http_01.py
index f3057a9b3..edcca8c9c 100644
--- a/certbot-apache/certbot_apache/http_01.py
+++ b/certbot-apache/certbot_apache/http_01.py
@@ -73,7 +73,9 @@ class ApacheHttp01(common.TLSSNI01):
     def _mod_config(self):
         moded_vhosts = set()
         for chall in self.achalls:
-            vh = self.configurator.find_best_http_vhost(chall.domain, filter_defaults=False)
+            vh = self.configurator.find_best_http_vhost(
+                chall.domain, filter_defaults=False,
+                port=str(self.configurator.config.http01_port))
             if vh and vh not in moded_vhosts:
                 self._set_up_include_directive(vh)
                 moded_vhosts.add(vh)