diff --git a/h5bp/web_performance/cache_expiration.conf b/h5bp/web_performance/cache_expiration.conf
index 5e00ba6..2cb330f 100644
--- a/h5bp/web_performance/cache_expiration.conf
+++ b/h5bp/web_performance/cache_expiration.conf
@@ -5,7 +5,7 @@
 # Serve resources with a far-future expiration date.
 #
 # (!) If you don't control versioning with filename-based cache busting, you
-# should consider lowering the cache times to something like one week.
+#     should consider lowering the cache times to something like one week.
 #
 # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
 # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Expires