From 4cb9ac72b4ebe09c7c969d8efdf9e8bdcc8166c2 Mon Sep 17 00:00:00 2001
From: Nate Clark <nate@nateclark.com>
Date: Fri, 24 Aug 2018 17:27:12 -0400
Subject: [PATCH] fix error message for cv.matches_regex (#16175)

---
 homeassistant/helpers/config_validation.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeassistant/helpers/config_validation.py b/homeassistant/helpers/config_validation.py
index bbd863b5693..90098a677a1 100644
--- a/homeassistant/helpers/config_validation.py
+++ b/homeassistant/helpers/config_validation.py
@@ -92,7 +92,7 @@ def matches_regex(regex):
 
         if not regex.match(value):
             raise vol.Invalid('value {} does not match regular expression {}'
-                              .format(regex.pattern, value))
+                              .format(value, regex.pattern))
 
         return value
     return validator