diff --git a/letsencrypt-apache/letsencrypt_apache/constants.py b/letsencrypt-apache/letsencrypt_apache/constants.py
index f8712c247..800959463 100644
--- a/letsencrypt-apache/letsencrypt_apache/constants.py
+++ b/letsencrypt-apache/letsencrypt_apache/constants.py
@@ -6,6 +6,7 @@ from letsencrypt import le_util
 CLI_DEFAULTS_DEBIAN = dict(
     server_root="/etc/apache2",
     vhost_root="/etc/apache2/sites-available",
+    vhost_files="*",
     ctl="apache2ctl",
     version_cmd=['apache2ctl', '-v'],
     define_cmd=['apache2ctl', '-t', '-D', 'DUMP_RUN_CFG'],
@@ -19,6 +20,7 @@ CLI_DEFAULTS_DEBIAN = dict(
 CLI_DEFAULTS_CENTOS = dict(
     server_root="/etc/httpd",
     vhost_root="/etc/httpd/conf.d",
+    vhost_files="*.conf",
     ctl="apachectl",
     version_cmd=['apachectl', '-v'],
     define_cmd=['apachectl', '-t', '-D', 'DUMP_RUN_CFG'],
@@ -32,6 +34,7 @@ CLI_DEFAULTS_CENTOS = dict(
 CLI_DEFAULTS_GENTOO = dict(
     server_root="/etc/apache2",
     vhost_root="/etc/apache2/vhosts.d",
+    vhost_files="*.conf",
     ctl="apache2ctl",
     version_cmd=['/usr/sbin/apache2', '-v'],
     define_cmd=['/usr/sbin/apache2', '-t', '-D', 'DUMP_RUN_CFG'],
diff --git a/letsencrypt-apache/letsencrypt_apache/parser.py b/letsencrypt-apache/letsencrypt_apache/parser.py
index 12704c859..5f84e9f52 100644
--- a/letsencrypt-apache/letsencrypt_apache/parser.py
+++ b/letsencrypt-apache/letsencrypt_apache/parser.py
@@ -60,9 +60,10 @@ class ApacheParser(object):
         self.loc.update(self._set_locations())
 
         # Must also attempt to parse virtual host root
-        self._parse_file(self.vhostroot + "/*.conf")
+        self._parse_file(self.vhostroot + "/" +
+                         constants.os_constant("vhost_files"))
 
-        #check to see if there were unparsed define statements
+        # check to see if there were unparsed define statements
         if version < (2, 4):
             if self.find_dir("Define", exclude=False):
                 raise errors.PluginError("Error parsing runtime variables")